Updated the files.

my-app/node_modules/@angular-devkit/schematics/tasks/repo-init/executor.d.ts

@@ -0,0 +1,10 @@
+/**
+ * @license
+ * Copyright Google LLC All Rights Reserved.
+ *
+ * Use of this source code is governed by an MIT-style license that can be
+ * found in the LICENSE file at https://angular.io/license
+ */
+import { TaskExecutor } from '../../src';
+import { RepositoryInitializerTaskFactoryOptions, RepositoryInitializerTaskOptions } from './options';
+export default function (factoryOptions?: RepositoryInitializerTaskFactoryOptions): TaskExecutor<RepositoryInitializerTaskOptions>;

my-app/node_modules/@angular-devkit/schematics/tasks/repo-init/executor.js

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+"use strict";
+/**
+ * @license
+ * Copyright Google LLC All Rights Reserved.
+ *
+ * Use of this source code is governed by an MIT-style license that can be
+ * found in the LICENSE file at https://angular.io/license
+ */
+var __createBinding = (this && this.__createBinding) || (Object.create ? (function(o, m, k, k2) {
+    if (k2 === undefined) k2 = k;
+    var desc = Object.getOwnPropertyDescriptor(m, k);
+    if (!desc || ("get" in desc ? !m.__esModule : desc.writable || desc.configurable)) {
+      desc = { enumerable: true, get: function() { return m[k]; } };
+    }
+    Object.defineProperty(o, k2, desc);
+}) : (function(o, m, k, k2) {
+    if (k2 === undefined) k2 = k;
+    o[k2] = m[k];
+}));
+var __setModuleDefault = (this && this.__setModuleDefault) || (Object.create ? (function(o, v) {
+    Object.defineProperty(o, "default", { enumerable: true, value: v });
+}) : function(o, v) {
+    o["default"] = v;
+});
+var __importStar = (this && this.__importStar) || function (mod) {
+    if (mod && mod.__esModule) return mod;
+    var result = {};
+    if (mod != null) for (var k in mod) if (k !== "default" && Object.prototype.hasOwnProperty.call(mod, k)) __createBinding(result, mod, k);
+    __setModuleDefault(result, mod);
+    return result;
+};
+Object.defineProperty(exports, "__esModule", { value: true });
+const core_1 = require("@angular-devkit/core");
+const child_process_1 = require("child_process");
+const path = __importStar(require("path"));
+function default_1(factoryOptions = {}) {
+    const rootDirectory = factoryOptions.rootDirectory || process.cwd();
+    return async (options = {}, context) => {
+        const authorName = options.authorName;
+        const authorEmail = options.authorEmail;
+        const execute = (args, ignoreErrorStream) => {
+            const outputStream = 'ignore';
+            const errorStream = ignoreErrorStream ? 'ignore' : process.stderr;
+            const spawnOptions = {
+                stdio: [process.stdin, outputStream, errorStream],
+                shell: true,
+                cwd: path.join(rootDirectory, options.workingDirectory || ''),
+                env: {
+                    ...process.env,
+                    ...(authorName ? { GIT_AUTHOR_NAME: authorName, GIT_COMMITTER_NAME: authorName } : {}),
+                    ...(authorEmail
+                        ? { GIT_AUTHOR_EMAIL: authorEmail, GIT_COMMITTER_EMAIL: authorEmail }
+                        : {}),
+                },
+            };
+            return new Promise((resolve, reject) => {
+                (0, child_process_1.spawn)('git', args, spawnOptions).on('close', (code) => {
+                    if (code === 0) {
+                        resolve();
+                    }
+                    else {
+                        reject(code);
+                    }
+                });
+            });
+        };
+        const hasCommand = await execute(['--version']).then(() => true, () => false);
+        if (!hasCommand) {
+            return;
+        }
+        const insideRepo = await execute(['rev-parse', '--is-inside-work-tree'], true).then(() => true, () => false);
+        if (insideRepo) {
+            context.logger.info(core_1.tags.oneLine `
+        Directory is already under version control.
+        Skipping initialization of git.
+      `);
+            return;
+        }
+        // if git is not found or an error was thrown during the `git`
+        // init process just swallow any errors here
+        // NOTE: This will be removed once task error handling is implemented
+        try {
+            await execute(['init']);
+            await execute(['add', '.']);
+            if (options.commit) {
+                const message = options.message || 'initial commit';
+                await execute(['commit', `-m "${message}"`]);
+            }
+            context.logger.info('Successfully initialized git.');
+        }
+        catch { }
+    };
+}
+exports.default = default_1;

my-app/node_modules/@angular-devkit/schematics/tasks/repo-init/init-task.d.ts

@@ -0,0 +1,20 @@
+/**
+ * @license
+ * Copyright Google LLC All Rights Reserved.
+ *
+ * Use of this source code is governed by an MIT-style license that can be
+ * found in the LICENSE file at https://angular.io/license
+ */
+import { TaskConfiguration, TaskConfigurationGenerator } from '../../src';
+import { RepositoryInitializerTaskOptions } from './options';
+export interface CommitOptions {
+    message?: string;
+    name?: string;
+    email?: string;
+}
+export declare class RepositoryInitializerTask implements TaskConfigurationGenerator<RepositoryInitializerTaskOptions> {
+    workingDirectory?: string | undefined;
+    commitOptions?: CommitOptions | undefined;
+    constructor(workingDirectory?: string | undefined, commitOptions?: CommitOptions | undefined);
+    toConfiguration(): TaskConfiguration<RepositoryInitializerTaskOptions>;
+}

my-app/node_modules/@angular-devkit/schematics/tasks/repo-init/init-task.js

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+"use strict";
+/**
+ * @license
+ * Copyright Google LLC All Rights Reserved.
+ *
+ * Use of this source code is governed by an MIT-style license that can be
+ * found in the LICENSE file at https://angular.io/license
+ */
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.RepositoryInitializerTask = void 0;
+const options_1 = require("./options");
+class RepositoryInitializerTask {
+    workingDirectory;
+    commitOptions;
+    constructor(workingDirectory, commitOptions) {
+        this.workingDirectory = workingDirectory;
+        this.commitOptions = commitOptions;
+    }
+    toConfiguration() {
+        return {
+            name: options_1.RepositoryInitializerName,
+            options: {
+                commit: !!this.commitOptions,
+                workingDirectory: this.workingDirectory,
+                authorName: this.commitOptions && this.commitOptions.name,
+                authorEmail: this.commitOptions && this.commitOptions.email,
+                message: this.commitOptions && this.commitOptions.message,
+            },
+        };
+    }
+}
+exports.RepositoryInitializerTask = RepositoryInitializerTask;

my-app/node_modules/@angular-devkit/schematics/tasks/repo-init/options.d.ts

@@ -0,0 +1,18 @@
+/**
+ * @license
+ * Copyright Google LLC All Rights Reserved.
+ *
+ * Use of this source code is governed by an MIT-style license that can be
+ * found in the LICENSE file at https://angular.io/license
+ */
+export declare const RepositoryInitializerName = "repo-init";
+export interface RepositoryInitializerTaskFactoryOptions {
+    rootDirectory?: string;
+}
+export interface RepositoryInitializerTaskOptions {
+    workingDirectory?: string;
+    commit?: boolean;
+    message?: string;
+    authorName?: string;
+    authorEmail?: string;
+}

my-app/node_modules/@angular-devkit/schematics/tasks/repo-init/options.js

@@ -0,0 +1,11 @@
+"use strict";
+/**
+ * @license
+ * Copyright Google LLC All Rights Reserved.
+ *
+ * Use of this source code is governed by an MIT-style license that can be
+ * found in the LICENSE file at https://angular.io/license
+ */
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.RepositoryInitializerName = void 0;
+exports.RepositoryInitializerName = 'repo-init';