Persist creds to a separate file

.github/workflows/test.yml

@@ -299,7 +299,7 @@ jobs:
   test-output:
     runs-on: ubuntu-latest
     steps:
-      # Download the action at the current ref
+      # Clone this repo
       - name: Checkout
         uses: actions/checkout@v4.1.6
         with:

__test__/git-auth-helper.test.ts

@@ -595,18 +595,15 @@ describe('git-auth-helper tests', () => {
       await authHelper.configureSubmoduleAuth()
 
       // Assert
-      // Should get submodule config paths (1 call) and configure insteadOf (2 calls for two values)
+      // Should configure insteadOf (2 calls for two values)
-      expect(mockSubmoduleForeach).toHaveBeenCalledTimes(4)
+      expect(mockSubmoduleForeach).toHaveBeenCalledTimes(3)
       expect(mockSubmoduleForeach.mock.calls[0][0]).toMatch(
         /unset-all.*insteadOf/
       )
       expect(mockSubmoduleForeach.mock.calls[1][0]).toMatch(
-        /show-origin.*remote\.origin\.url/
-      )
-      expect(mockSubmoduleForeach.mock.calls[2][0]).toMatch(
         /url.*insteadOf.*git@github.com:/
       )
-      expect(mockSubmoduleForeach.mock.calls[3][0]).toMatch(
+      expect(mockSubmoduleForeach.mock.calls[2][0]).toMatch(
         /url.*insteadOf.*org-123456@github.com:/
       )
     }
@@ -637,15 +634,12 @@ describe('git-auth-helper tests', () => {
       await authHelper.configureSubmoduleAuth()
 
       // Assert
-      // Should get submodule config paths (1 call) and configure sshCommand (1 call)
+      // Should configure sshCommand (1 call)
-      expect(mockSubmoduleForeach).toHaveBeenCalledTimes(3)
+      expect(mockSubmoduleForeach).toHaveBeenCalledTimes(2)
       expect(mockSubmoduleForeach.mock.calls[0][0]).toMatch(
         /unset-all.*insteadOf/
       )
-      expect(mockSubmoduleForeach.mock.calls[1][0]).toMatch(
+      expect(mockSubmoduleForeach.mock.calls[1][0]).toMatch(/core\.sshCommand/)
-        /show-origin.*remote\.origin\.url/
-      )
-      expect(mockSubmoduleForeach.mock.calls[2][0]).toMatch(/core\.sshCommand/)
     }
   )
 
@@ -712,7 +706,7 @@ describe('git-auth-helper tests', () => {
     const authHelper = gitAuthHelper.createAuthHelper(git, settings)
     await authHelper.configureAuth()
 
-    // Sanity check - verify includeIf entries exist in local config
+    // Verify includeIf entries exist in local config
     let localConfigContent = (
       await fs.promises.readFile(localGitConfigPath)
     ).toString()
@@ -720,26 +714,192 @@ describe('git-auth-helper tests', () => {
       localConfigContent.indexOf('includeIf.gitdir:')
     ).toBeGreaterThanOrEqual(0)
 
-    // Sanity check - verify credentials file exists
+    // Verify both host and container includeIf entries are present
+    const hostGitDir = path.join(workspace, '.git').replace(/\\/g, '/')
+    expect(
+      localConfigContent.indexOf(`includeIf.gitdir:${hostGitDir}.path`)
+    ).toBeGreaterThanOrEqual(0)
+    expect(
+      localConfigContent.indexOf('includeIf.gitdir:/github/workspace/.git.path')
+    ).toBeGreaterThanOrEqual(0)
+
+    // Verify credentials file exists
     let credentialsFiles = (await fs.promises.readdir(runnerTemp)).filter(
       f => f.startsWith('git-credentials-') && f.endsWith('.config')
     )
     expect(credentialsFiles.length).toBe(1)
+    const credentialsFilePath = path.join(runnerTemp, credentialsFiles[0])
+
+    // Verify credentials file contains the auth token
+    let credentialsContent = (
+      await fs.promises.readFile(credentialsFilePath)
+    ).toString()
+    const basicCredential = Buffer.from(
+      `x-access-token:${settings.authToken}`,
+      'utf8'
+    ).toString('base64')
+    expect(
+      credentialsContent.indexOf(
+        `http.https://github.com/.extraheader AUTHORIZATION: basic ${basicCredential}`
+      )
+    ).toBeGreaterThanOrEqual(0)
+
+    // Verify the includeIf entries point to the credentials file
+    const containerCredentialsPath = path.posix.join(
+      '/github/runner_temp',
+      path.basename(credentialsFilePath)
+    )
+    expect(
+      localConfigContent.indexOf(credentialsFilePath)
+    ).toBeGreaterThanOrEqual(0)
+    expect(
+      localConfigContent.indexOf(containerCredentialsPath)
+    ).toBeGreaterThanOrEqual(0)
 
     // Act
     await authHelper.removeAuth()
 
-    // Assert includeIf entries removed from local git config
+    // Assert all includeIf entries removed from local git config
     localConfigContent = (
       await fs.promises.readFile(localGitConfigPath)
     ).toString()
     expect(localConfigContent.indexOf('includeIf.gitdir:')).toBeLessThan(0)
+    expect(
+      localConfigContent.indexOf(`includeIf.gitdir:${hostGitDir}.path`)
+    ).toBeLessThan(0)
+    expect(
+      localConfigContent.indexOf('includeIf.gitdir:/github/workspace/.git.path')
+    ).toBeLessThan(0)
+    expect(localConfigContent.indexOf(credentialsFilePath)).toBeLessThan(0)
+    expect(localConfigContent.indexOf(containerCredentialsPath)).toBeLessThan(0)
 
     // Assert credentials config file deleted
     credentialsFiles = (await fs.promises.readdir(runnerTemp)).filter(
       f => f.startsWith('git-credentials-') && f.endsWith('.config')
     )
     expect(credentialsFiles.length).toBe(0)
+
+    // Verify credentials file no longer exists on disk
+    try {
+      await fs.promises.stat(credentialsFilePath)
+      throw new Error('Credentials file should have been deleted')
+    } catch (err) {
+      if ((err as any)?.code !== 'ENOENT') {
+        throw err
+      }
+    }
+  })
+
+  const removeAuth_removesTokenFromSubmodules =
+    'removeAuth removes token from submodules'
+  it(removeAuth_removesTokenFromSubmodules, async () => {
+    // Arrange
+    await setup(removeAuth_removesTokenFromSubmodules)
+
+    // Create fake submodule config paths
+    const submodule1Dir = path.join(workspace, '.git', 'modules', 'submodule-1')
+    const submodule2Dir = path.join(workspace, '.git', 'modules', 'submodule-2')
+    const submodule1ConfigPath = path.join(submodule1Dir, 'config')
+    const submodule2ConfigPath = path.join(submodule2Dir, 'config')
+
+    await fs.promises.mkdir(submodule1Dir, {recursive: true})
+    await fs.promises.mkdir(submodule2Dir, {recursive: true})
+    await fs.promises.writeFile(submodule1ConfigPath, '')
+    await fs.promises.writeFile(submodule2ConfigPath, '')
+
+    // Mock getSubmoduleConfigPaths to return our fake submodules (for both configure and remove)
+    const mockGetSubmoduleConfigPaths =
+      git.getSubmoduleConfigPaths as jest.Mock<any, any>
+    mockGetSubmoduleConfigPaths.mockResolvedValue([
+      submodule1ConfigPath,
+      submodule2ConfigPath
+    ])
+
+    const authHelper = gitAuthHelper.createAuthHelper(git, settings)
+    await authHelper.configureAuth()
+    await authHelper.configureSubmoduleAuth()
+
+    // Verify credentials file exists
+    let credentialsFiles = (await fs.promises.readdir(runnerTemp)).filter(
+      f => f.startsWith('git-credentials-') && f.endsWith('.config')
+    )
+    expect(credentialsFiles.length).toBe(1)
+    const credentialsFilePath = path.join(runnerTemp, credentialsFiles[0])
+
+    // Verify submodule 1 config has includeIf entries
+    let submodule1Content = (
+      await fs.promises.readFile(submodule1ConfigPath)
+    ).toString()
+    const submodule1GitDir = submodule1Dir.replace(/\\/g, '/')
+    expect(
+      submodule1Content.indexOf(`includeIf.gitdir:${submodule1GitDir}.path`)
+    ).toBeGreaterThanOrEqual(0)
+    expect(
+      submodule1Content.indexOf(credentialsFilePath)
+    ).toBeGreaterThanOrEqual(0)
+
+    // Verify submodule 2 config has includeIf entries
+    let submodule2Content = (
+      await fs.promises.readFile(submodule2ConfigPath)
+    ).toString()
+    const submodule2GitDir = submodule2Dir.replace(/\\/g, '/')
+    expect(
+      submodule2Content.indexOf(`includeIf.gitdir:${submodule2GitDir}.path`)
+    ).toBeGreaterThanOrEqual(0)
+    expect(
+      submodule2Content.indexOf(credentialsFilePath)
+    ).toBeGreaterThanOrEqual(0)
+
+    // Verify both host and container paths are in each submodule config
+    const containerCredentialsPath = path.posix.join(
+      '/github/runner_temp',
+      path.basename(credentialsFilePath)
+    )
+    expect(
+      submodule1Content.indexOf(containerCredentialsPath)
+    ).toBeGreaterThanOrEqual(0)
+    expect(
+      submodule2Content.indexOf(containerCredentialsPath)
+    ).toBeGreaterThanOrEqual(0)
+
+    // Act - ensure mock persists for removeAuth
+    mockGetSubmoduleConfigPaths.mockResolvedValue([
+      submodule1ConfigPath,
+      submodule2ConfigPath
+    ])
+    await authHelper.removeAuth()
+
+    // Assert submodule 1 includeIf entries removed
+    submodule1Content = (
+      await fs.promises.readFile(submodule1ConfigPath)
+    ).toString()
+    expect(submodule1Content.indexOf('includeIf.gitdir:')).toBeLessThan(0)
+    expect(submodule1Content.indexOf(credentialsFilePath)).toBeLessThan(0)
+    expect(submodule1Content.indexOf(containerCredentialsPath)).toBeLessThan(0)
+
+    // Assert submodule 2 includeIf entries removed
+    submodule2Content = (
+      await fs.promises.readFile(submodule2ConfigPath)
+    ).toString()
+    expect(submodule2Content.indexOf('includeIf.gitdir:')).toBeLessThan(0)
+    expect(submodule2Content.indexOf(credentialsFilePath)).toBeLessThan(0)
+    expect(submodule2Content.indexOf(containerCredentialsPath)).toBeLessThan(0)
+
+    // Assert credentials config file deleted
+    credentialsFiles = (await fs.promises.readdir(runnerTemp)).filter(
+      f => f.startsWith('git-credentials-') && f.endsWith('.config')
+    )
+    expect(credentialsFiles.length).toBe(0)
+
+    // Verify credentials file no longer exists on disk
+    try {
+      await fs.promises.stat(credentialsFilePath)
+      throw new Error('Credentials file should have been deleted')
+    } catch (err) {
+      if ((err as any)?.code !== 'ENOENT') {
+        throw err
+      }
+    }
   })
 
   const removeGlobalConfig_removesOverride =
@@ -768,6 +928,52 @@ describe('git-auth-helper tests', () => {
       }
     }
   })
+
+  const testCredentialsConfigPath_matchesCredentialsConfigPaths =
+    'testCredentialsConfigPath matches credentials config paths'
+  it(testCredentialsConfigPath_matchesCredentialsConfigPaths, async () => {
+    // Arrange
+    await setup(testCredentialsConfigPath_matchesCredentialsConfigPaths)
+    const authHelper = gitAuthHelper.createAuthHelper(git, settings)
+
+    // Get a real credentials config path
+    const credentialsConfigPath = await (
+      authHelper as any
+    ).getCredentialsConfigPath()
+
+    // Act & Assert
+    expect(
+      (authHelper as any).testCredentialsConfigPath(credentialsConfigPath)
+    ).toBe(true)
+    expect(
+      (authHelper as any).testCredentialsConfigPath(
+        '/some/path/git-credentials-12345678-abcd-1234-5678-123456789012.config'
+      )
+    ).toBe(true)
+    expect(
+      (authHelper as any).testCredentialsConfigPath(
+        '/some/path/git-credentials-abcdef12-3456-7890-abcd-ef1234567890.config'
+      )
+    ).toBe(true)
+
+    // Test invalid paths
+    expect(
+      (authHelper as any).testCredentialsConfigPath(
+        '/some/path/other-config.config'
+      )
+    ).toBe(false)
+    expect(
+      (authHelper as any).testCredentialsConfigPath(
+        '/some/path/git-credentials-invalid.config'
+      )
+    ).toBe(false)
+    expect(
+      (authHelper as any).testCredentialsConfigPath(
+        '/some/path/git-credentials-.config'
+      )
+    ).toBe(false)
+    expect((authHelper as any).testCredentialsConfigPath('')).toBe(false)
+  })
 })
 
 async function setup(testName: string): Promise<void> {
@@ -834,6 +1040,7 @@ async function setup(testName: string): Promise<void> {
     env: {},
     fetch: jest.fn(),
     getDefaultBranch: jest.fn(),
+    getSubmoduleConfigPaths: jest.fn(async () => []),
     getWorkingDirectory: jest.fn(() => workspace),
     init: jest.fn(),
     isDetached: jest.fn(),
@@ -873,28 +1080,41 @@ async function setup(testName: string): Promise<void> {
       }
     ),
     tryConfigUnsetValue: jest.fn(
-      async (key: string, value: string, globalConfig?: boolean): Promise<boolean> => {
+      async (
-        const configPath = globalConfig
+        key: string,
+        value: string,
+        globalConfig?: boolean,
+        configPath?: string
+      ): Promise<boolean> => {
+        const targetConfigPath =
+          configPath ||
+          (globalConfig
             ? path.join(git.env['HOME'] || tempHomedir, '.gitconfig')
-          : localGitConfigPath
+            : localGitConfigPath)
-        let content = await fs.promises.readFile(configPath)
+        let content = await fs.promises.readFile(targetConfigPath)
         let lines = content
           .toString()
           .split('\n')
           .filter(x => x)
           .filter(x => !(x.startsWith(key) && x.includes(value)))
-        await fs.promises.writeFile(configPath, lines.join('\n'))
+        await fs.promises.writeFile(targetConfigPath, lines.join('\n'))
         return true
       }
     ),
     tryDisableAutomaticGarbageCollection: jest.fn(),
     tryGetFetchUrl: jest.fn(),
     tryGetConfigValues: jest.fn(
-      async (key: string, globalConfig?: boolean): Promise<string[]> => {
+      async (
-        const configPath = globalConfig
+        key: string,
+        globalConfig?: boolean,
+        configPath?: string
+      ): Promise<string[]> => {
+        const targetConfigPath =
+          configPath ||
+          (globalConfig
             ? path.join(git.env['HOME'] || tempHomedir, '.gitconfig')
-          : localGitConfigPath
+            : localGitConfigPath)
-        const content = await fs.promises.readFile(configPath)
+        const content = await fs.promises.readFile(targetConfigPath)
         const lines = content
           .toString()
           .split('\n')
@@ -904,11 +1124,17 @@ async function setup(testName: string): Promise<void> {
       }
     ),
     tryGetConfigKeys: jest.fn(
-      async (pattern: string, globalConfig?: boolean): Promise<string[]> => {
+      async (
-        const configPath = globalConfig
+        pattern: string,
+        globalConfig?: boolean,
+        configPath?: string
+      ): Promise<string[]> => {
+        const targetConfigPath =
+          configPath ||
+          (globalConfig
             ? path.join(git.env['HOME'] || tempHomedir, '.gitconfig')
-          : localGitConfigPath
+            : localGitConfigPath)
-        const content = await fs.promises.readFile(configPath)
+        const content = await fs.promises.readFile(targetConfigPath)
         const lines = content
           .toString()
           .split('\n')

__test__/git-directory-helper.test.ts

@@ -471,6 +471,7 @@ async function setup(testName: string): Promise<void> {
     configExists: jest.fn(),
     fetch: jest.fn(),
     getDefaultBranch: jest.fn(),
+    getSubmoduleConfigPaths: jest.fn(async () => []),
     getWorkingDirectory: jest.fn(() => repositoryPath),
     init: jest.fn(),
     isDetached: jest.fn(),

__test__/verify-submodules-recursive.sh

@@ -17,7 +17,7 @@ fi
 
 echo "Testing persisted credential"
 pushd ./submodules-recursive/submodule-level-1/submodule-level-2
-git config --local --name-only --get-regexp http.+extraheader && git fetch
+git config --local --includes --name-only --get-regexp http.+extraheader && git fetch
 if [ "$?" != "0" ]; then
     echo "Failed to validate persisted credential"
     popd

__test__/verify-submodules-true.sh

@@ -17,7 +17,7 @@ fi
 
 echo "Testing persisted credential"
 pushd ./submodules-true/submodule-level-1
-git config --local --name-only --get-regexp http.+extraheader && git fetch
+git config --local --includes --name-only --get-regexp http.+extraheader && git fetch
 if [ "$?" != "0" ]; then
     echo "Failed to validate persisted credential"
     popd

dist/index.js

@@ -163,7 +163,6 @@ class GitAuthHelper {
         this.sshKnownHostsPath = '';
         this.temporaryHomePath = '';
         this.credentialsConfigPath = ''; // Path to separate credentials config file in RUNNER_TEMP
-        this.credentialsIncludeKeys = []; // Track includeIf config keys for cleanup
         this.git = gitCommandManager;
         this.settings = gitSourceSettings || {};
         // Token auth header
@@ -189,20 +188,6 @@ class GitAuthHelper {
             yield this.configureToken();
         });
     }
-    getCredentialsConfigPath() {
-        return __awaiter(this, void 0, void 0, function* () {
-            if (this.credentialsConfigPath) {
-                return this.credentialsConfigPath;
-            }
-            const runnerTemp = process.env['RUNNER_TEMP'] || '';
-            assert.ok(runnerTemp, 'RUNNER_TEMP is not defined');
-            // Create a unique filename for this checkout instance
-            const configFileName = `git-credentials-${(0, uuid_1.v4)()}.config`;
-            this.credentialsConfigPath = path.join(runnerTemp, configFileName);
-            core.debug(`Credentials config path: ${this.credentialsConfigPath}`);
-            return this.credentialsConfigPath;
-        });
-    }
     configureTempGlobalConfig() {
         return __awaiter(this, void 0, void 0, function* () {
             var _a;
@@ -253,7 +238,9 @@ class GitAuthHelper {
                 yield this.git.tryConfigUnset(this.insteadOfKey, true);
                 if (!this.settings.sshKey) {
                     for (const insteadOfValue of this.insteadOfValues) {
-                        yield this.git.config(this.insteadOfKey, insteadOfValue, true, true);
+                        yield this.git.config(this.insteadOfKey, insteadOfValue, true, // globalConfig?
+                        true // add?
+                        );
                     }
                 }
             }
@@ -270,22 +257,12 @@ class GitAuthHelper {
             // Remove possible previous HTTPS instead of SSH
             yield this.removeSubmoduleGitConfig(this.insteadOfKey);
             if (this.settings.persistCredentials) {
-                // Credentials config path
+                // Get the credentials config file path in RUNNER_TEMP
-                const credentialsConfigPath = yield this.getCredentialsConfigPath();
+                const credentialsConfigPath = this.getCredentialsConfigPath();
                 // Container credentials config path
                 const containerCredentialsPath = path.posix.join('/github/runner_temp', path.basename(credentialsConfigPath));
-                // Container repo path
-                const workingDirectory = this.git.getWorkingDirectory();
-                const githubWorkspace = process.env['GITHUB_WORKSPACE'];
-                assert.ok(githubWorkspace, 'GITHUB_WORKSPACE is not defined');
-                let relativePath = path.relative(githubWorkspace, workingDirectory);
-                relativePath = relativePath.replace(/\\/g, '/');
-                const containerRepoPath = path.posix.join('/github/workspace', relativePath);
                 // Get submodule config file paths.
-                // Use `--show-origin` to get the config file path for each submodule.
+                const configPaths = yield this.git.getSubmoduleConfigPaths(this.settings.nestedSubmodules);
-                const output = yield this.git.submoduleForeach(`git config --local --show-origin --name-only --get-regexp remote.origin.url`, this.settings.nestedSubmodules);
-                // Extract config file paths from the output (lines starting with "file:").
-                const configPaths = output.match(/(?<=(^|\n)file:)[^\t]+(?=\tremote\.origin\.url)/g) || [];
                 // For each submodule, configure includeIf entries pointing to the shared credentials file.
                 // Configure both host and container paths to support Docker container actions.
                 for (const configPath of configPaths) {
@@ -293,12 +270,19 @@ class GitAuthHelper {
                     let submoduleGitDir = path.dirname(configPath); // The config file is at .git/modules/submodule-name/config
                     submoduleGitDir = submoduleGitDir.replace(/\\/g, '/'); // Use forward slashes, even on Windows
                     // Configure host includeIf
-                    yield this.git.config(`includeIf.gitdir:${submoduleGitDir}.path`, credentialsConfigPath, false, false, configPath);
+                    yield this.git.config(`includeIf.gitdir:${submoduleGitDir}.path`, credentialsConfigPath, false, // globalConfig?
-                    // Configure container includeIf
+                    false, // add?
+                    configPath);
+                    // Container submodule git directory
+                    const githubWorkspace = process.env['GITHUB_WORKSPACE'];
+                    assert.ok(githubWorkspace, 'GITHUB_WORKSPACE is not defined');
                     let relativeSubmoduleGitDir = path.relative(githubWorkspace, submoduleGitDir);
                     relativeSubmoduleGitDir = relativeSubmoduleGitDir.replace(/\\/g, '/'); // Use forward slashes, even on Windows
                     const containerSubmoduleGitDir = path.posix.join('/github/workspace', relativeSubmoduleGitDir);
-                    yield this.git.config(`includeIf.gitdir:${containerSubmoduleGitDir}.path`, containerCredentialsPath, false, false, configPath);
+                    // Configure container includeIf
+                    yield this.git.config(`includeIf.gitdir:${containerSubmoduleGitDir}.path`, containerCredentialsPath, false, // globalConfig?
+                    false, // add?
+                    configPath);
                 }
                 if (this.settings.sshKey) {
                     // Configure core.sshCommand
@@ -329,6 +313,10 @@ class GitAuthHelper {
             }
         });
     }
+    /**
+     * Configures SSH authentication by writing the SSH key and known hosts,
+     * and setting up the GIT_SSH_COMMAND environment variable.
+     */
     configureSsh() {
         return __awaiter(this, void 0, void 0, function* () {
             if (!this.settings.sshKey) {
@@ -385,21 +373,37 @@ class GitAuthHelper {
             }
         });
     }
+    /**
+     * Configures token-based authentication by creating a credentials config file
+     * and setting up includeIf entries to reference it.
+     * @param globalConfig Whether to configure global config instead of local
+     */
     configureToken(globalConfig) {
         return __awaiter(this, void 0, void 0, function* () {
             // Get the credentials config file path in RUNNER_TEMP
-            const credentialsConfigPath = yield this.getCredentialsConfigPath();
+            const credentialsConfigPath = this.getCredentialsConfigPath();
             // Write placeholder to the separate credentials config file using git config.
             // This approach avoids the credential being captured by process creation audit events,
             // which are commonly logged. For more information, refer to
             // https://docs.microsoft.com/en-us/windows-server/identity/ad-ds/manage/component-updates/command-line-process-auditing
-            yield this.git.config(this.tokenConfigKey, this.tokenPlaceholderConfigValue, false, false, credentialsConfigPath);
+            yield this.git.config(this.tokenConfigKey, this.tokenPlaceholderConfigValue, false, // globalConfig?
+            false, // add?
+            credentialsConfigPath);
             // Replace the placeholder in the credentials config file
-            yield this.replaceTokenPlaceholder(credentialsConfigPath);
+            let content = (yield fs.promises.readFile(credentialsConfigPath)).toString();
+            const placeholderIndex = content.indexOf(this.tokenPlaceholderConfigValue);
+            if (placeholderIndex < 0 ||
+                placeholderIndex != content.lastIndexOf(this.tokenPlaceholderConfigValue)) {
+                throw new Error(`Unable to replace auth placeholder in ${credentialsConfigPath}`);
+            }
+            assert.ok(this.tokenConfigValue, 'tokenConfigValue is not defined');
+            content = content.replace(this.tokenPlaceholderConfigValue, this.tokenConfigValue);
+            yield fs.promises.writeFile(credentialsConfigPath, content);
             // Add include or includeIf to reference the credentials config
             if (globalConfig) {
                 // Global config file is temporary
-                yield this.git.config('include.path', credentialsConfigPath, true);
+                yield this.git.config('include.path', credentialsConfigPath, true // globalConfig?
+                );
             }
             else {
                 // Host git directory
@@ -408,11 +412,10 @@ class GitAuthHelper {
                 // Configure host includeIf
                 const hostIncludeKey = `includeIf.gitdir:${gitDir}.path`;
                 yield this.git.config(hostIncludeKey, credentialsConfigPath);
-                this.credentialsIncludeKeys.push(hostIncludeKey);
                 // Container git directory
+                const workingDirectory = this.git.getWorkingDirectory();
                 const githubWorkspace = process.env['GITHUB_WORKSPACE'];
                 assert.ok(githubWorkspace, 'GITHUB_WORKSPACE is not defined');
-                const workingDirectory = this.git.getWorkingDirectory();
                 let relativePath = path.relative(githubWorkspace, workingDirectory);
                 relativePath = relativePath.replace(/\\/g, '/'); // Use forward slashes, even on Windows
                 const containerGitDir = path.posix.join('/github/workspace', relativePath, '.git');
@@ -421,31 +424,37 @@ class GitAuthHelper {
                 // Configure container includeIf
                 const containerIncludeKey = `includeIf.gitdir:${containerGitDir}.path`;
                 yield this.git.config(containerIncludeKey, containerCredentialsPath);
-                this.credentialsIncludeKeys.push(containerIncludeKey);
             }
         });
     }
-    replaceTokenPlaceholder(configPath) {
+    /**
-        return __awaiter(this, void 0, void 0, function* () {
+     * Gets or creates the path to the credentials config file in RUNNER_TEMP.
-            assert.ok(configPath, 'configPath is not defined');
+     * @returns The absolute path to the credentials config file
-            let content = (yield fs.promises.readFile(configPath)).toString();
+     */
-            const placeholderIndex = content.indexOf(this.tokenPlaceholderConfigValue);
+    getCredentialsConfigPath() {
-            if (placeholderIndex < 0 ||
+        if (this.credentialsConfigPath) {
-                placeholderIndex != content.lastIndexOf(this.tokenPlaceholderConfigValue)) {
+            return this.credentialsConfigPath;
-                throw new Error(`Unable to replace auth placeholder in ${configPath}`);
         }
-            assert.ok(this.tokenConfigValue, 'tokenConfigValue is not defined');
+        const runnerTemp = process.env['RUNNER_TEMP'] || '';
-            content = content.replace(this.tokenPlaceholderConfigValue, this.tokenConfigValue);
+        assert.ok(runnerTemp, 'RUNNER_TEMP is not defined');
-            yield fs.promises.writeFile(configPath, content);
+        // Create a unique filename for this checkout instance
-        });
+        const configFileName = `git-credentials-${(0, uuid_1.v4)()}.config`;
+        this.credentialsConfigPath = path.join(runnerTemp, configFileName);
+        core.debug(`Credentials config path: ${this.credentialsConfigPath}`);
+        return this.credentialsConfigPath;
     }
+    /**
+     * Removes SSH authentication configuration by cleaning up SSH keys,
+     * known hosts files, and SSH command configurations.
+     */
     removeSsh() {
         return __awaiter(this, void 0, void 0, function* () {
-            var _a;
+            var _a, _b;
             // SSH key
             const keyPath = this.sshKeyPath || stateHelper.SshKeyPath;
             if (keyPath) {
                 try {
+                    core.info(`Removing SSH key '${keyPath}'`);
                     yield io.rmRF(keyPath);
                 }
                 catch (err) {
@@ -457,60 +466,68 @@ class GitAuthHelper {
             const knownHostsPath = this.sshKnownHostsPath || stateHelper.SshKnownHostsPath;
             if (knownHostsPath) {
                 try {
+                    core.info(`Removing SSH known hosts '${knownHostsPath}'`);
                     yield io.rmRF(knownHostsPath);
                 }
-                catch (_b) {
+                catch (err) {
-                    // Intentionally empty
+                    core.debug(`${(_b = err === null || err === void 0 ? void 0 : err.message) !== null && _b !== void 0 ? _b : err}`);
+                    core.warning(`Failed to remove SSH known hosts '${knownHostsPath}'`);
                 }
             }
             // SSH command
+            core.info('Removing SSH command configuration');
             yield this.removeGitConfig(SSH_COMMAND_KEY);
             yield this.removeSubmoduleGitConfig(SSH_COMMAND_KEY);
         });
     }
+    /**
+     * Removes token-based authentication by cleaning up HTTP headers,
+     * includeIf entries, and credentials config files.
+     */
     removeToken() {
         return __awaiter(this, void 0, void 0, function* () {
             var _a;
             // Remove HTTP extra header
+            core.info('Removing HTTP extra header');
             yield this.removeGitConfig(this.tokenConfigKey);
             yield this.removeSubmoduleGitConfig(this.tokenConfigKey);
+            // Collect credentials config paths that need to be removed
+            const credentialsPaths = new Set();
             // Remove includeIf entries that point to git-credentials-*.config files
-            // This is more aggressive than tracking keys, but necessary since cleanup
+            core.info('Removing includeIf entries pointing to credentials config files');
-            // runs in a post-step where this.credentialsIncludeKeys is empty
+            const mainCredentialsPaths = yield this.removeIncludeIfCredentials();
+            mainCredentialsPaths.forEach(path => credentialsPaths.add(path));
+            // Remove submodule includeIf entries that point to git-credentials-*.config files
+            const submoduleConfigPaths = yield this.git.getSubmoduleConfigPaths(true);
+            for (const configPath of submoduleConfigPaths) {
+                const submoduleCredentialsPaths = yield this.removeIncludeIfCredentials(configPath);
+                submoduleCredentialsPaths.forEach(path => credentialsPaths.add(path));
+            }
+            // Remove credentials config files
+            for (const credentialsPath of credentialsPaths) {
+                // Only remove credentials config files if they are under RUNNER_TEMP
+                const runnerTemp = process.env['RUNNER_TEMP'];
+                assert.ok(runnerTemp, 'RUNNER_TEMP is not defined');
+                if (credentialsPath.startsWith(runnerTemp)) {
                     try {
-                // Get all includeIf.gitdir keys
+                        core.info(`Removing credentials config '${credentialsPath}'`);
-                const keys = yield this.git.tryGetConfigKeys('^includeIf\\.gitdir:');
+                        yield io.rmRF(credentialsPath);
-                for (const key of keys) {
-                    // Get all values for this key
-                    const values = yield this.git.tryGetConfigValues(key);
-                    if (values.length > 0) {
-                        // Remove only values that match git-credentials-<uuid>.config pattern
-                        for (const value of values) {
-                            if (/git-credentials-[0-9a-f-]+\.config$/i.test(value)) {
-                                yield this.git.tryConfigUnsetValue(key, value);
-                            }
-                        }
-                    }
-                }
-            }
-            catch (err) {
-                // Ignore errors - this is cleanup code
-                core.debug(`Error during includeIf cleanup: ${err}`);
-            }
-            // Remove submodule includeIf
-            yield this.git.submoduleForeach(`sh -c "git config --local --get-regexp '^includeIf\\.' && git config --local --remove-section includeIf || :"`, true);
-            // Remove credentials config file
-            if (this.credentialsConfigPath) {
-                try {
-                    yield io.rmRF(this.credentialsConfigPath);
                     }
                     catch (err) {
                         core.debug(`${(_a = err === null || err === void 0 ? void 0 : err.message) !== null && _a !== void 0 ? _a : err}`);
-                    core.warning(`Failed to remove credentials config '${this.credentialsConfigPath}'`);
+                        core.warning(`Failed to remove credentials config '${credentialsPath}'`);
+                    }
+                }
+                else {
+                    core.debug(`Skipping removal of credentials config '${credentialsPath}' - not under RUNNER_TEMP`);
                 }
             }
         });
     }
+    /**
+     * Removes a git config key from the local repository config.
+     * @param configKey The git config key to remove
+     */
     removeGitConfig(configKey) {
         return __awaiter(this, void 0, void 0, function* () {
             if ((yield this.git.configExists(configKey)) &&
@@ -520,6 +537,10 @@ class GitAuthHelper {
             }
         });
     }
+    /**
+     * Removes a git config key from all submodule configs.
+     * @param configKey The git config key to remove
+     */
     removeSubmoduleGitConfig(configKey) {
         return __awaiter(this, void 0, void 0, function* () {
             const pattern = regexpHelper.escape(configKey);
@@ -528,6 +549,53 @@ class GitAuthHelper {
             `sh -c "git config --local --name-only --get-regexp '${pattern}' && git config --local --unset-all '${configKey}' || :"`, true);
         });
     }
+    /**
+     * Removes includeIf entries that point to git-credentials-*.config files.
+     * @param configPath Optional path to a specific git config file to operate on
+     * @returns Array of unique credentials config file paths that were found and removed
+     */
+    removeIncludeIfCredentials(configPath) {
+        return __awaiter(this, void 0, void 0, function* () {
+            const credentialsPaths = new Set();
+            try {
+                // Get all includeIf.gitdir keys
+                const keys = yield this.git.tryGetConfigKeys('^includeIf\\.gitdir:', false, // globalConfig?
+                configPath);
+                for (const key of keys) {
+                    // Get all values for this key
+                    const values = yield this.git.tryGetConfigValues(key, false, // globalConfig?
+                    configPath);
+                    if (values.length > 0) {
+                        // Remove only values that match git-credentials-<uuid>.config pattern
+                        for (const value of values) {
+                            if (this.testCredentialsConfigPath(value)) {
+                                credentialsPaths.add(value);
+                                yield this.git.tryConfigUnsetValue(key, value, false, configPath);
+                            }
+                        }
+                    }
+                }
+            }
+            catch (err) {
+                // Ignore errors - this is cleanup code
+                if (configPath) {
+                    core.debug(`Error during includeIf cleanup for ${configPath}: ${err}`);
+                }
+                else {
+                    core.debug(`Error during includeIf cleanup: ${err}`);
+                }
+            }
+            return Array.from(credentialsPaths);
+        });
+    }
+    /**
+     * Tests if a path matches the git-credentials-*.config pattern.
+     * @param path The path to test
+     * @returns True if the path matches the credentials config pattern
+     */
+    testCredentialsConfigPath(path) {
+        return /git-credentials-[0-9a-f-]+\.config$/i.test(path);
+    }
 }
 
 
@@ -810,6 +878,16 @@ class GitCommandManager {
             throw new Error('Unexpected output when retrieving default branch');
         });
     }
+    getSubmoduleConfigPaths(recursive) {
+        return __awaiter(this, void 0, void 0, function* () {
+            // Get submodule config file paths.
+            // Use `--show-origin` to get the config file path for each submodule.
+            const output = yield this.submoduleForeach(`git config --local --show-origin --name-only --get-regexp remote.origin.url`, recursive);
+            // Extract config file paths from the output (lines starting with "file:").
+            const configPaths = output.match(/(?<=(^|\n)file:)[^\t]+(?=\tremote\.origin\.url)/g) || [];
+            return configPaths;
+        });
+    }
     getWorkingDirectory() {
         return this.workingDirectory;
     }
@@ -940,15 +1018,17 @@ class GitCommandManager {
             return output.exitCode === 0;
         });
     }
-    tryConfigUnsetValue(configKey, configValue, globalConfig) {
+    tryConfigUnsetValue(configKey, configValue, globalConfig, configFile) {
         return __awaiter(this, void 0, void 0, function* () {
-            const output = yield this.execGit([
+            const args = ['config'];
-                'config',
+            if (configFile) {
-                globalConfig ? '--global' : '--local',
+                args.push('--file', configFile);
-                '--unset',
+            }
-                configKey,
+            else {
-                configValue
+                args.push(globalConfig ? '--global' : '--local');
-            ], true);
+            }
+            args.push('--unset', configKey, configValue);
+            const output = yield this.execGit(args, true);
             return output.exitCode === 0;
         });
     }
@@ -971,33 +1051,44 @@ class GitCommandManager {
             return stdout;
         });
     }
-    tryGetConfigValues(configKey, globalConfig) {
+    tryGetConfigValues(configKey, globalConfig, configFile) {
         return __awaiter(this, void 0, void 0, function* () {
-            const output = yield this.execGit([
+            const args = ['config'];
-                'config',
+            if (configFile) {
-                globalConfig ? '--global' : '--local',
+                args.push('--file', configFile);
-                '--get-all',
+            }
-                configKey
+            else {
-            ], true);
+                args.push(globalConfig ? '--global' : '--local');
+            }
+            args.push('--get-all', configKey);
+            const output = yield this.execGit(args, true);
             if (output.exitCode !== 0) {
                 return [];
             }
-            return output.stdout.trim().split('\n').filter(value => value.trim());
+            return output.stdout
+                .trim()
+                .split('\n')
+                .filter(value => value.trim());
         });
     }
-    tryGetConfigKeys(pattern, globalConfig) {
+    tryGetConfigKeys(pattern, globalConfig, configFile) {
         return __awaiter(this, void 0, void 0, function* () {
-            const output = yield this.execGit([
+            const args = ['config'];
-                'config',
+            if (configFile) {
-                globalConfig ? '--global' : '--local',
+                args.push('--file', configFile);
-                '--name-only',
+            }
-                '--get-regexp',
+            else {
-                pattern
+                args.push(globalConfig ? '--global' : '--local');
-            ], true);
+            }
+            args.push('--name-only', '--get-regexp', pattern);
+            const output = yield this.execGit(args, true);
             if (output.exitCode !== 0) {
                 return [];
             }
-            return output.stdout.trim().split('\n').filter(key => key.trim());
+            return output.stdout
+                .trim()
+                .split('\n')
+                .filter(key => key.trim());
         });
     }
     tryReset() {

src/git-auth-helper.ts

@@ -44,7 +44,6 @@ class GitAuthHelper {
   private sshKnownHostsPath = ''
   private temporaryHomePath = ''
   private credentialsConfigPath = '' // Path to separate credentials config file in RUNNER_TEMP
-  private credentialsIncludeKeys: string[] = [] // Track includeIf config keys for cleanup
 
   constructor(
     gitCommandManager: IGitCommandManager,
@@ -83,22 +82,6 @@ class GitAuthHelper {
     await this.configureToken()
   }
 
-  private async getCredentialsConfigPath(): Promise<string> {
-    if (this.credentialsConfigPath) {
-      return this.credentialsConfigPath
-    }
-
-    const runnerTemp = process.env['RUNNER_TEMP'] || ''
-    assert.ok(runnerTemp, 'RUNNER_TEMP is not defined')
-
-    // Create a unique filename for this checkout instance
-    const configFileName = `git-credentials-${uuid()}.config`
-    this.credentialsConfigPath = path.join(runnerTemp, configFileName)
-
-    core.debug(`Credentials config path: ${this.credentialsConfigPath}`)
-    return this.credentialsConfigPath
-  }
-
   async configureTempGlobalConfig(): Promise<string> {
     // Already setup global config
     if (this.temporaryHomePath?.length > 0) {
@@ -153,7 +136,12 @@ class GitAuthHelper {
       await this.git.tryConfigUnset(this.insteadOfKey, true)
       if (!this.settings.sshKey) {
         for (const insteadOfValue of this.insteadOfValues) {
-          await this.git.config(this.insteadOfKey, insteadOfValue, true, true)
+          await this.git.config(
+            this.insteadOfKey,
+            insteadOfValue,
+            true, // globalConfig?
+            true // add?
+          )
         }
       }
     } catch (err) {
@@ -171,8 +159,8 @@ class GitAuthHelper {
     await this.removeSubmoduleGitConfig(this.insteadOfKey)
 
     if (this.settings.persistCredentials) {
-      // Credentials config path
+      // Get the credentials config file path in RUNNER_TEMP
-      const credentialsConfigPath = await this.getCredentialsConfigPath()
+      const credentialsConfigPath = this.getCredentialsConfigPath()
 
       // Container credentials config path
       const containerCredentialsPath = path.posix.join(
@@ -180,28 +168,11 @@ class GitAuthHelper {
         path.basename(credentialsConfigPath)
       )
 
-      // Container repo path
-      const workingDirectory = this.git.getWorkingDirectory()
-      const githubWorkspace = process.env['GITHUB_WORKSPACE']
-      assert.ok(githubWorkspace, 'GITHUB_WORKSPACE is not defined')
-      let relativePath = path.relative(githubWorkspace, workingDirectory)
-      relativePath = relativePath.replace(/\\/g, '/')
-      const containerRepoPath = path.posix.join(
-        '/github/workspace',
-        relativePath
-      )
-
       // Get submodule config file paths.
-      // Use `--show-origin` to get the config file path for each submodule.
+      const configPaths = await this.git.getSubmoduleConfigPaths(
-      const output = await this.git.submoduleForeach(
-        `git config --local --show-origin --name-only --get-regexp remote.origin.url`,
         this.settings.nestedSubmodules
       )
 
-      // Extract config file paths from the output (lines starting with "file:").
-      const configPaths =
-        output.match(/(?<=(^|\n)file:)[^\t]+(?=\tremote\.origin\.url)/g) || []
-
       // For each submodule, configure includeIf entries pointing to the shared credentials file.
       // Configure both host and container paths to support Docker container actions.
       for (const configPath of configPaths) {
@@ -213,12 +184,14 @@ class GitAuthHelper {
         await this.git.config(
           `includeIf.gitdir:${submoduleGitDir}.path`,
           credentialsConfigPath,
-          false,
+          false, // globalConfig?
-          false,
+          false, // add?
           configPath
         )
 
-        // Configure container includeIf
+        // Container submodule git directory
+        const githubWorkspace = process.env['GITHUB_WORKSPACE']
+        assert.ok(githubWorkspace, 'GITHUB_WORKSPACE is not defined')
         let relativeSubmoduleGitDir = path.relative(
           githubWorkspace,
           submoduleGitDir
@@ -228,11 +201,13 @@ class GitAuthHelper {
           '/github/workspace',
           relativeSubmoduleGitDir
         )
+
+        // Configure container includeIf
         await this.git.config(
           `includeIf.gitdir:${containerSubmoduleGitDir}.path`,
           containerCredentialsPath,
-          false,
+          false, // globalConfig?
-          false,
+          false, // add?
           configPath
         )
       }
@@ -268,6 +243,10 @@ class GitAuthHelper {
     }
   }
 
+  /**
+   * Configures SSH authentication by writing the SSH key and known hosts,
+   * and setting up the GIT_SSH_COMMAND environment variable.
+   */
   private async configureSsh(): Promise<void> {
     if (!this.settings.sshKey) {
       return
@@ -339,9 +318,14 @@ class GitAuthHelper {
     }
   }
 
+  /**
+   * Configures token-based authentication by creating a credentials config file
+   * and setting up includeIf entries to reference it.
+   * @param globalConfig Whether to configure global config instead of local
+   */
   private async configureToken(globalConfig?: boolean): Promise<void> {
     // Get the credentials config file path in RUNNER_TEMP
-    const credentialsConfigPath = await this.getCredentialsConfigPath()
+    const credentialsConfigPath = this.getCredentialsConfigPath()
 
     // Write placeholder to the separate credentials config file using git config.
     // This approach avoids the credential being captured by process creation audit events,
@@ -350,18 +334,37 @@ class GitAuthHelper {
     await this.git.config(
       this.tokenConfigKey,
       this.tokenPlaceholderConfigValue,
-      false,
+      false, // globalConfig?
-      false,
+      false, // add?
       credentialsConfigPath
     )
 
     // Replace the placeholder in the credentials config file
-    await this.replaceTokenPlaceholder(credentialsConfigPath)
+    let content = (await fs.promises.readFile(credentialsConfigPath)).toString()
+    const placeholderIndex = content.indexOf(this.tokenPlaceholderConfigValue)
+    if (
+      placeholderIndex < 0 ||
+      placeholderIndex != content.lastIndexOf(this.tokenPlaceholderConfigValue)
+    ) {
+      throw new Error(
+        `Unable to replace auth placeholder in ${credentialsConfigPath}`
+      )
+    }
+    assert.ok(this.tokenConfigValue, 'tokenConfigValue is not defined')
+    content = content.replace(
+      this.tokenPlaceholderConfigValue,
+      this.tokenConfigValue
+    )
+    await fs.promises.writeFile(credentialsConfigPath, content)
 
     // Add include or includeIf to reference the credentials config
     if (globalConfig) {
       // Global config file is temporary
-      await this.git.config('include.path', credentialsConfigPath, true)
+      await this.git.config(
+        'include.path',
+        credentialsConfigPath,
+        true // globalConfig?
+      )
     } else {
       // Host git directory
       let gitDir = path.join(this.git.getWorkingDirectory(), '.git')
@@ -370,12 +373,11 @@ class GitAuthHelper {
       // Configure host includeIf
       const hostIncludeKey = `includeIf.gitdir:${gitDir}.path`
       await this.git.config(hostIncludeKey, credentialsConfigPath)
-      this.credentialsIncludeKeys.push(hostIncludeKey)
 
       // Container git directory
+      const workingDirectory = this.git.getWorkingDirectory()
       const githubWorkspace = process.env['GITHUB_WORKSPACE']
       assert.ok(githubWorkspace, 'GITHUB_WORKSPACE is not defined')
-      const workingDirectory = this.git.getWorkingDirectory()
       let relativePath = path.relative(githubWorkspace, workingDirectory)
       relativePath = relativePath.replace(/\\/g, '/') // Use forward slashes, even on Windows
       const containerGitDir = path.posix.join(
@@ -393,33 +395,39 @@ class GitAuthHelper {
       // Configure container includeIf
       const containerIncludeKey = `includeIf.gitdir:${containerGitDir}.path`
       await this.git.config(containerIncludeKey, containerCredentialsPath)
-      this.credentialsIncludeKeys.push(containerIncludeKey)
     }
   }
 
-  private async replaceTokenPlaceholder(configPath: string): Promise<void> {
+  /**
-    assert.ok(configPath, 'configPath is not defined')
+   * Gets or creates the path to the credentials config file in RUNNER_TEMP.
-    let content = (await fs.promises.readFile(configPath)).toString()
+   * @returns The absolute path to the credentials config file
-    const placeholderIndex = content.indexOf(this.tokenPlaceholderConfigValue)
+   */
-    if (
+  private getCredentialsConfigPath(): string {
-      placeholderIndex < 0 ||
+    if (this.credentialsConfigPath) {
-      placeholderIndex != content.lastIndexOf(this.tokenPlaceholderConfigValue)
+      return this.credentialsConfigPath
-    ) {
-      throw new Error(`Unable to replace auth placeholder in ${configPath}`)
-    }
-    assert.ok(this.tokenConfigValue, 'tokenConfigValue is not defined')
-    content = content.replace(
-      this.tokenPlaceholderConfigValue,
-      this.tokenConfigValue
-    )
-    await fs.promises.writeFile(configPath, content)
     }
 
+    const runnerTemp = process.env['RUNNER_TEMP'] || ''
+    assert.ok(runnerTemp, 'RUNNER_TEMP is not defined')
+
+    // Create a unique filename for this checkout instance
+    const configFileName = `git-credentials-${uuid()}.config`
+    this.credentialsConfigPath = path.join(runnerTemp, configFileName)
+
+    core.debug(`Credentials config path: ${this.credentialsConfigPath}`)
+    return this.credentialsConfigPath
+  }
+
+  /**
+   * Removes SSH authentication configuration by cleaning up SSH keys,
+   * known hosts files, and SSH command configurations.
+   */
   private async removeSsh(): Promise<void> {
     // SSH key
     const keyPath = this.sshKeyPath || stateHelper.SshKeyPath
     if (keyPath) {
       try {
+        core.info(`Removing SSH key '${keyPath}'`)
         await io.rmRF(keyPath)
       } catch (err) {
         core.debug(`${(err as any)?.message ?? err}`)
@@ -432,65 +440,73 @@ class GitAuthHelper {
       this.sshKnownHostsPath || stateHelper.SshKnownHostsPath
     if (knownHostsPath) {
       try {
+        core.info(`Removing SSH known hosts '${knownHostsPath}'`)
         await io.rmRF(knownHostsPath)
-      } catch {
+      } catch (err) {
-        // Intentionally empty
+        core.debug(`${(err as any)?.message ?? err}`)
+        core.warning(`Failed to remove SSH known hosts '${knownHostsPath}'`)
       }
     }
 
     // SSH command
+    core.info('Removing SSH command configuration')
     await this.removeGitConfig(SSH_COMMAND_KEY)
     await this.removeSubmoduleGitConfig(SSH_COMMAND_KEY)
   }
 
+  /**
+   * Removes token-based authentication by cleaning up HTTP headers,
+   * includeIf entries, and credentials config files.
+   */
   private async removeToken(): Promise<void> {
     // Remove HTTP extra header
+    core.info('Removing HTTP extra header')
     await this.removeGitConfig(this.tokenConfigKey)
     await this.removeSubmoduleGitConfig(this.tokenConfigKey)
 
+    // Collect credentials config paths that need to be removed
+    const credentialsPaths = new Set<string>()
+
     // Remove includeIf entries that point to git-credentials-*.config files
-    // This is more aggressive than tracking keys, but necessary since cleanup
+    core.info('Removing includeIf entries pointing to credentials config files')
-    // runs in a post-step where this.credentialsIncludeKeys is empty
+    const mainCredentialsPaths = await this.removeIncludeIfCredentials()
+    mainCredentialsPaths.forEach(path => credentialsPaths.add(path))
+
+    // Remove submodule includeIf entries that point to git-credentials-*.config files
+    const submoduleConfigPaths = await this.git.getSubmoduleConfigPaths(true)
+    for (const configPath of submoduleConfigPaths) {
+      const submoduleCredentialsPaths =
+        await this.removeIncludeIfCredentials(configPath)
+      submoduleCredentialsPaths.forEach(path => credentialsPaths.add(path))
+    }
+
+    // Remove credentials config files
+    for (const credentialsPath of credentialsPaths) {
+      // Only remove credentials config files if they are under RUNNER_TEMP
+      const runnerTemp = process.env['RUNNER_TEMP']
+      assert.ok(runnerTemp, 'RUNNER_TEMP is not defined')
+      if (credentialsPath.startsWith(runnerTemp)) {
         try {
-      // Get all includeIf.gitdir keys
+          core.info(`Removing credentials config '${credentialsPath}'`)
-      const keys = await this.git.tryGetConfigKeys('^includeIf\\.gitdir:')
+          await io.rmRF(credentialsPath)
-      
-      for (const key of keys) {
-        // Get all values for this key
-        const values = await this.git.tryGetConfigValues(key)
-        if (values.length > 0) {
-          // Remove only values that match git-credentials-<uuid>.config pattern
-          for (const value of values) {
-            if (/git-credentials-[0-9a-f-]+\.config$/i.test(value)) {
-              await this.git.tryConfigUnsetValue(key, value)
-            }
-          }
-        }
-      }
-    } catch (err) {
-      // Ignore errors - this is cleanup code
-      core.debug(`Error during includeIf cleanup: ${err}`)
-    }
-
-    // Remove submodule includeIf
-    await this.git.submoduleForeach(
-      `sh -c "git config --local --get-regexp '^includeIf\\.' && git config --local --remove-section includeIf || :"`,
-      true
-    )
-
-    // Remove credentials config file
-    if (this.credentialsConfigPath) {
-      try {
-        await io.rmRF(this.credentialsConfigPath)
         } catch (err) {
           core.debug(`${(err as any)?.message ?? err}`)
           core.warning(
-          `Failed to remove credentials config '${this.credentialsConfigPath}'`
+            `Failed to remove credentials config '${credentialsPath}'`
+          )
+        }
+      } else {
+        core.debug(
+          `Skipping removal of credentials config '${credentialsPath}' - not under RUNNER_TEMP`
         )
       }
     }
   }
 
+  /**
+   * Removes a git config key from the local repository config.
+   * @param configKey The git config key to remove
+   */
   private async removeGitConfig(configKey: string): Promise<void> {
     if (
       (await this.git.configExists(configKey)) &&
@@ -501,6 +517,10 @@ class GitAuthHelper {
     }
   }
 
+  /**
+   * Removes a git config key from all submodule configs.
+   * @param configKey The git config key to remove
+   */
   private async removeSubmoduleGitConfig(configKey: string): Promise<void> {
     const pattern = regexpHelper.escape(configKey)
     await this.git.submoduleForeach(
@@ -509,4 +529,60 @@ class GitAuthHelper {
       true
     )
   }
+
+  /**
+   * Removes includeIf entries that point to git-credentials-*.config files.
+   * @param configPath Optional path to a specific git config file to operate on
+   * @returns Array of unique credentials config file paths that were found and removed
+   */
+  private async removeIncludeIfCredentials(
+    configPath?: string
+  ): Promise<string[]> {
+    const credentialsPaths = new Set<string>()
+
+    try {
+      // Get all includeIf.gitdir keys
+      const keys = await this.git.tryGetConfigKeys(
+        '^includeIf\\.gitdir:',
+        false, // globalConfig?
+        configPath
+      )
+
+      for (const key of keys) {
+        // Get all values for this key
+        const values = await this.git.tryGetConfigValues(
+          key,
+          false, // globalConfig?
+          configPath
+        )
+        if (values.length > 0) {
+          // Remove only values that match git-credentials-<uuid>.config pattern
+          for (const value of values) {
+            if (this.testCredentialsConfigPath(value)) {
+              credentialsPaths.add(value)
+              await this.git.tryConfigUnsetValue(key, value, false, configPath)
+            }
+          }
+        }
+      }
+    } catch (err) {
+      // Ignore errors - this is cleanup code
+      if (configPath) {
+        core.debug(`Error during includeIf cleanup for ${configPath}: ${err}`)
+      } else {
+        core.debug(`Error during includeIf cleanup: ${err}`)
+      }
+    }
+
+    return Array.from(credentialsPaths)
+  }
+
+  /**
+   * Tests if a path matches the git-credentials-*.config pattern.
+   * @param path The path to test
+   * @returns True if the path matches the credentials config pattern
+   */
+  private testCredentialsConfigPath(path: string): boolean {
+    return /git-credentials-[0-9a-f-]+\.config$/i.test(path)
+  }
 }

src/git-command-manager.ts

@@ -42,6 +42,7 @@ export interface IGitCommandManager {
     }
   ): Promise<void>
   getDefaultBranch(repositoryUrl: string): Promise<string>
+  getSubmoduleConfigPaths(recursive: boolean): Promise<string[]>
   getWorkingDirectory(): string
   init(): Promise<void>
   isDetached(): Promise<boolean>
@@ -60,11 +61,24 @@ export interface IGitCommandManager {
   tagExists(pattern: string): Promise<boolean>
   tryClean(): Promise<boolean>
   tryConfigUnset(configKey: string, globalConfig?: boolean): Promise<boolean>
-  tryConfigUnsetValue(configKey: string, configValue: string, globalConfig?: boolean): Promise<boolean>
+  tryConfigUnsetValue(
+    configKey: string,
+    configValue: string,
+    globalConfig?: boolean,
+    configFile?: string
+  ): Promise<boolean>
   tryDisableAutomaticGarbageCollection(): Promise<boolean>
   tryGetFetchUrl(): Promise<string>
-  tryGetConfigValues(configKey: string, globalConfig?: boolean): Promise<string[]>
+  tryGetConfigValues(
-  tryGetConfigKeys(pattern: string, globalConfig?: boolean): Promise<string[]>
+    configKey: string,
+    globalConfig?: boolean,
+    configFile?: string
+  ): Promise<string[]>
+  tryGetConfigKeys(
+    pattern: string,
+    globalConfig?: boolean,
+    configFile?: string
+  ): Promise<string[]>
   tryReset(): Promise<boolean>
   version(): Promise<GitVersion>
 }
@@ -333,6 +347,21 @@ class GitCommandManager {
     throw new Error('Unexpected output when retrieving default branch')
   }
 
+  async getSubmoduleConfigPaths(recursive: boolean): Promise<string[]> {
+    // Get submodule config file paths.
+    // Use `--show-origin` to get the config file path for each submodule.
+    const output = await this.submoduleForeach(
+      `git config --local --show-origin --name-only --get-regexp remote.origin.url`,
+      recursive
+    )
+
+    // Extract config file paths from the output (lines starting with "file:").
+    const configPaths =
+      output.match(/(?<=(^|\n)file:)[^\t]+(?=\tremote\.origin\.url)/g) || []
+
+    return configPaths
+  }
+
   getWorkingDirectory(): string {
     return this.workingDirectory
   }
@@ -468,18 +497,18 @@ class GitCommandManager {
   async tryConfigUnsetValue(
     configKey: string,
     configValue: string,
-    globalConfig?: boolean
+    globalConfig?: boolean,
+    configFile?: string
   ): Promise<boolean> {
-    const output = await this.execGit(
+    const args = ['config']
-      [
+    if (configFile) {
-        'config',
+      args.push('--file', configFile)
-        globalConfig ? '--global' : '--local',
+    } else {
-        '--unset',
+      args.push(globalConfig ? '--global' : '--local')
-        configKey,
+    }
-        configValue
+    args.push('--unset', configKey, configValue)
-      ],
+
-      true
+    const output = await this.execGit(args, true)
-    )
     return output.exitCode === 0
   }
 
@@ -511,45 +540,52 @@ class GitCommandManager {
 
   async tryGetConfigValues(
     configKey: string,
-    globalConfig?: boolean
+    globalConfig?: boolean,
+    configFile?: string
   ): Promise<string[]> {
-    const output = await this.execGit(
+    const args = ['config']
-      [
+    if (configFile) {
-        'config',
+      args.push('--file', configFile)
-        globalConfig ? '--global' : '--local',
+    } else {
-        '--get-all',
+      args.push(globalConfig ? '--global' : '--local')
-        configKey
+    }
-      ],
+    args.push('--get-all', configKey)
-      true
+
-    )
+    const output = await this.execGit(args, true)
 
     if (output.exitCode !== 0) {
       return []
     }
 
-    return output.stdout.trim().split('\n').filter(value => value.trim())
+    return output.stdout
+      .trim()
+      .split('\n')
+      .filter(value => value.trim())
   }
 
   async tryGetConfigKeys(
     pattern: string,
-    globalConfig?: boolean
+    globalConfig?: boolean,
+    configFile?: string
   ): Promise<string[]> {
-    const output = await this.execGit(
+    const args = ['config']
-      [
+    if (configFile) {
-        'config',
+      args.push('--file', configFile)
-        globalConfig ? '--global' : '--local',
+    } else {
-        '--name-only',
+      args.push(globalConfig ? '--global' : '--local')
-        '--get-regexp',
+    }
-        pattern
+    args.push('--name-only', '--get-regexp', pattern)
-      ],
+
-      true
+    const output = await this.execGit(args, true)
-    )
 
     if (output.exitCode !== 0) {
       return []
     }
 
-    return output.stdout.trim().split('\n').filter(key => key.trim())
+    return output.stdout
+      .trim()
+      .split('\n')
+      .filter(key => key.trim())
   }
 
   async tryReset(): Promise<boolean> {