diff --git a/.changeset/nine-olives-swim.md b/.changeset/nine-olives-swim.md
new file mode 100644
index 0000000000..40852c08c2
--- /dev/null
+++ b/.changeset/nine-olives-swim.md
@@ -0,0 +1,5 @@
+---
+'@backstage/plugin-scaffolder-node': minor
+---
+
+Added functions to clone a repo, create a branch, add files and push and commit to the branch. This allows for files to be added to the a PR for use in the bitbucket pull request action for issue #21762
diff --git a/.changeset/unlucky-wasps-tan.md b/.changeset/unlucky-wasps-tan.md
new file mode 100644
index 0000000000..97813cb416
--- /dev/null
+++ b/.changeset/unlucky-wasps-tan.md
@@ -0,0 +1,5 @@
+---
+'@backstage/plugin-scaffolder-backend-module-bitbucket': patch
+---
+
+Enhanced the pull request action to allow for adding new content to the PR as described in this issue #21762
diff --git a/plugins/scaffolder-backend-module-bitbucket/package.json b/plugins/scaffolder-backend-module-bitbucket/package.json
index 03ebab43fc..e045bb9dc8 100644
--- a/plugins/scaffolder-backend-module-bitbucket/package.json
+++ b/plugins/scaffolder-backend-module-bitbucket/package.json
@@ -28,6 +28,7 @@
     "@backstage/errors": "workspace:^",
     "@backstage/integration": "workspace:^",
     "@backstage/plugin-scaffolder-node": "workspace:^",
+    "fs-extra": "10.1.0",
     "node-fetch": "^2.6.7",
     "yaml": "^2.0.0"
   },
diff --git a/plugins/scaffolder-backend-module-bitbucket/src/actions/bitbucketServerPullRequest.ts b/plugins/scaffolder-backend-module-bitbucket/src/actions/bitbucketServerPullRequest.ts
index dc75145ebc..fc123f0b80 100644
--- a/plugins/scaffolder-backend-module-bitbucket/src/actions/bitbucketServerPullRequest.ts
+++ b/plugins/scaffolder-backend-module-bitbucket/src/actions/bitbucketServerPullRequest.ts
@@ -21,10 +21,16 @@ import {
 } from '@backstage/integration';
 import {
   createTemplateAction,
+  getRepoSourceDirectory,
+  commitAndPushBranch,
+  addFiles,
+  createBranch as createGitBranch,
+  cloneRepo,
   parseRepoUrl,
 } from '@backstage/plugin-scaffolder-node';
 import fetch, { RequestInit, Response } from 'node-fetch';
 import { Config } from '@backstage/config';
+import fs from 'fs-extra';
 
 const createPullRequest = async (opts: {
   project: string;
@@ -152,7 +158,51 @@ const findBranches = async (opts: {
 
   return undefined;
 };
+const createBranch = async (opts: {
+  project: string;
+  repo: string;
+  branchName: string;
+  authorization: string;
+  apiBaseUrl: string;
+  startPoint: string;
+}) => {
+  const { project, repo, branchName, authorization, apiBaseUrl, startPoint } =
+    opts;
 
+  let response: Response;
+  const options: RequestInit = {
+    method: 'POST',
+    body: JSON.stringify({
+      name: branchName,
+      startPoint,
+    }),
+    headers: {
+      Authorization: authorization,
+      'Content-Type': 'application/json',
+    },
+  };
+
+  try {
+    response = await fetch(
+      `${apiBaseUrl}/projects/${encodeURIComponent(
+        project,
+      )}/repos/${encodeURIComponent(repo)}/branches`,
+      options,
+    );
+  } catch (e) {
+    throw new Error(`Unable to create branch, ${e}`);
+  }
+
+  if (response.status !== 200) {
+    throw new Error(
+      `Unable to create branch, ${response.status} ${
+        response.statusText
+      }, ${await response.text()}`,
+    );
+  }
+
+  return await response.json();
+};
 /**
  * Creates a BitbucketServer Pull Request action.
  * @public
@@ -161,7 +211,7 @@ export function createPublishBitbucketServerPullRequestAction(options: {
   integrations: ScmIntegrationRegistry;
   config: Config;
 }) {
-  const { integrations } = options;
+  const { integrations, config } = options;
 
   return createTemplateAction<{
     repoUrl: string;
@@ -268,7 +318,7 @@ export function createPublishBitbucketServerPullRequestAction(options: {
         apiBaseUrl,
       });
 
-      const fromRef = await findBranches({
+      let fromRef = await findBranches({
         project,
         repo,
         branchName: sourceBranch,
@@ -276,6 +326,83 @@ export function createPublishBitbucketServerPullRequestAction(options: {
         apiBaseUrl,
       });
 
+      if (!fromRef) {
+        // create branch
+        ctx.logger.info(
+          `source branch not found -> creating branch named: ${sourceBranch} lastCommit: ${toRef.latestCommit}`,
+        );
+        const latestCommit = toRef.latestCommit;
+
+        fromRef = await createBranch({
+          project,
+          repo,
+          branchName: sourceBranch,
+          authorization,
+          apiBaseUrl,
+          startPoint: latestCommit,
+        });
+
+        const remoteUrl = `https://${host}/scm/${project}/${repo}.git`;
+
+        const auth = authConfig.token
+          ? {
+              token: token!,
+            }
+          : {
+              username: authConfig.username!,
+              password: authConfig.password!,
+            };
+
+        const gitAuthorInfo = {
+          name: config.getOptionalString('scaffolder.defaultAuthor.name'),
+          email: config.getOptionalString('scaffolder.defaultAuthor.email'),
+        };
+
+        const tempDir = await ctx.createTemporaryDirectory();
+        const sourceDir = getRepoSourceDirectory(ctx.workspacePath, undefined);
+        await cloneRepo({
+          url: remoteUrl,
+          dir: tempDir,
+          auth,
+          logger: ctx.logger,
+          ref: sourceBranch,
+        });
+
+        await createGitBranch({
+          dir: tempDir,
+          auth,
+          logger: ctx.logger,
+          ref: sourceBranch,
+        });
+
+        // copy files
+        fs.cpSync(sourceDir, tempDir, {
+          recursive: true,
+          filter: path => {
+            return !(path.indexOf('.git') > -1);
+          },
+        });
+
+        await addFiles({
+          dir: tempDir,
+          auth,
+          logger: ctx.logger,
+          filepath: '.',
+        });
+
+        await commitAndPushBranch({
+          dir: tempDir,
+          auth,
+          logger: ctx.logger,
+          commitMessage:
+            description ??
+            config.getOptionalString('scaffolder.defaultCommitMessage') ??
+            '',
+          gitAuthorInfo,
+          branch: sourceBranch,
+        });
+      }
+
       const pullRequestUrl = await createPullRequest({
         project,
         repo,
diff --git a/plugins/scaffolder-node/api-report.md b/plugins/scaffolder-node/api-report.md
index 6bb1534679..1d9adb20d9 100644
--- a/plugins/scaffolder-node/api-report.md
+++ b/plugins/scaffolder-node/api-report.md
@@ -45,6 +45,63 @@ export type ActionContext<
   each?: JsonObject;
 };
 
+// @public (undocumented)
+export function addFiles(options: {
+  dir: string;
+  filepath: string;
+  auth:
+    | {
+        username: string;
+        password: string;
+      }
+    | {
+        token: string;
+      };
+  logger?: Logger | undefined;
+}): Promise<void>;
+
+// @public (undocumented)
+export function cloneRepo(options: {
+  url: string;
+  dir: string;
+  auth:
+    | {
+        username: string;
+        password: string;
+      }
+    | {
+        token: string;
+      };
+  logger?: Logger | undefined;
+  ref?: string | undefined;
+  depth?: number | undefined;
+  noCheckout?: boolean | undefined;
+}): Promise<void>;
+
+// @public (undocumented)
+export function commitAndPushBranch(options: {
+  dir: string;
+  auth:
+    | {
+        username: string;
+        password: string;
+      }
+    | {
+        token: string;
+      };
+  logger?: Logger | undefined;
+  commitMessage: string;
+  gitAuthorInfo?: {
+    name?: string;
+    email?: string;
+  };
+  branch?: string;
+  remoteRef?: string;
+  remote?: string;
+}): Promise<{
+  commitHash: string;
+}>;
+
 // @public (undocumented)
 export function commitAndPushRepo(input: {
   dir: string;
@@ -68,6 +125,21 @@ export function commitAndPushRepo(input: {
   commitHash: string;
 }>;
 
+// @public (undocumented)
+export function createBranch(options: {
+  dir: string;
+  ref: string;
+  auth:
+    | {
+        username: string;
+        password: string;
+      }
+    | {
+        token: string;
+      };
+  logger?: Logger | undefined;
+}): Promise<void>;
+
 // @public
 export const createTemplateAction: <
   TInputParams extends JsonObject = JsonObject,
diff --git a/plugins/scaffolder-node/src/actions/gitHelpers.test.ts b/plugins/scaffolder-node/src/actions/gitHelpers.test.ts
index 7bc3f64f46..b230b2cd06 100644
--- a/plugins/scaffolder-node/src/actions/gitHelpers.test.ts
+++ b/plugins/scaffolder-node/src/actions/gitHelpers.test.ts
@@ -15,7 +15,14 @@
  */
 
 import { Git, getVoidLogger } from '@backstage/backend-common';
-import { commitAndPushRepo, initRepoAndPush } from './gitHelpers';
+import {
+  commitAndPushRepo,
+  initRepoAndPush,
+  commitAndPushBranch,
+  addFiles,
+  createBranch,
+  cloneRepo,
+} from './gitHelpers';
 
 jest.mock('@backstage/backend-common', () => ({
   Git: {
@@ -29,10 +36,14 @@ jest.mock('@backstage/backend-common', () => ({
       fetch: jest.fn(),
       addRemote: jest.fn(),
       push: jest.fn(),
+      clone: jest.fn(),
     }),
   },
   getVoidLogger: jest.requireActual('@backstage/backend-common').getVoidLogger,
 }));
+jest.mock('fs-extra', () => ({
+  cpSync: jest.fn(),
+}));
 
 const mockedGit = Git.fromAuth({
   logger: getVoidLogger(),
@@ -303,3 +314,333 @@ describe('commitAndPushRepo', () => {
     });
   });
 });
+
+describe('cloneRepo', () => {
+  afterEach(() => {
+    jest.clearAllMocks();
+  });
+
+  describe('with minimal parameters', () => {
+    beforeEach(async () => {
+      await cloneRepo({
+        url: 'git@github.com:test/repo.git',
+        dir: '/tmp/repo/dir/',
+        auth: {
+          username: 'test-user',
+          password: 'test-password',
+        },
+      });
+    });
+
+    it('clone the repo', () => {
+      expect(mockedGit.clone).toHaveBeenCalledWith({
+        url: 'git@github.com:test/repo.git',
+        dir: '/tmp/repo/dir/',
+        ref: undefined,
+        depth: undefined,
+        noCheckout: undefined,
+      });
+    });
+  });
+
+  it('with token', async () => {
+    await cloneRepo({
+      url: 'git@github.com:test/repo.git',
+      dir: '/tmp/repo/dir/',
+      auth: {
+        token: 'test-token',
+      },
+    });
+
+    expect(mockedGit.clone).toHaveBeenCalledWith({
+      dir: '/tmp/repo/dir/',
+      url: 'git@github.com:test/repo.git',
+      ref: undefined,
+      depth: undefined,
+      noCheckout: undefined,
+    });
+  });
+
+  it('allows overriding the default branch', async () => {
+    await cloneRepo({
+      url: 'git@github.com:test/repo.git',
+      dir: '/tmp/repo/dir/',
+      ref: 'trunk',
+      auth: {
+        username: 'test-user',
+        password: 'test-password',
+      },
+    });
+
+    expect(mockedGit.clone).toHaveBeenCalledWith({
+      dir: '/tmp/repo/dir/',
+      url: 'git@github.com:test/repo.git',
+      ref: 'trunk',
+      depth: undefined,
+      noCheckout: undefined,
+    });
+  });
+
+  it('allows overriding the depth', async () => {
+    await cloneRepo({
+      url: 'git@github.com:test/repo.git',
+      dir: '/tmp/repo/dir/',
+      ref: 'trunk',
+      depth: 2,
+      auth: {
+        username: 'test-user',
+        password: 'test-password',
+      },
+    });
+
+    expect(mockedGit.clone).toHaveBeenCalledWith({
+      dir: '/tmp/repo/dir/',
+      url: 'git@github.com:test/repo.git',
+      ref: 'trunk',
+      depth: 2,
+      noCheckout: undefined,
+    });
+  });
+
+  it('allows overriding the noCheckout', async () => {
+    await cloneRepo({
+      url: 'git@github.com:test/repo.git',
+      dir: '/tmp/repo/dir/',
+      ref: 'trunk',
+      depth: 2,
+      noCheckout: true,
+      auth: {
+        username: 'test-user',
+        password: 'test-password',
+      },
+    });
+
+    expect(mockedGit.clone).toHaveBeenCalledWith({
+      dir: '/tmp/repo/dir/',
+      url: 'git@github.com:test/repo.git',
+      ref: 'trunk',
+      depth: 2,
+      noCheckout: true,
+    });
+  });
+});
+
+describe('createBranch', () => {
+  afterEach(() => {
+    jest.clearAllMocks();
+  });
+
+  describe('with minimal parameters', () => {
+    beforeEach(async () => {
+      await createBranch({
+        dir: '/tmp/repo/dir/',
+        ref: 'trunk',
+        auth: {
+          username: 'test-user',
+          password: 'test-password',
+        },
+      });
+    });
+
+    it('create the branch', () => {
+      expect(mockedGit.checkout).toHaveBeenCalledWith({
+        ref: 'trunk',
+        dir: '/tmp/repo/dir/',
+      });
+    });
+  });
+
+  it('with token', async () => {
+    await createBranch({
+      dir: '/tmp/repo/dir/',
+      ref: 'trunk',
+      auth: {
+        token: 'test-token',
+      },
+    });
+
+    expect(mockedGit.checkout).toHaveBeenCalledWith({
+      ref: 'trunk',
+      dir: '/tmp/repo/dir/',
+    });
+  });
+});
+
+describe('addFiles', () => {
+  afterEach(() => {
+    jest.clearAllMocks();
+  });
+
+  describe('with minimal parameters', () => {
+    beforeEach(async () => {
+      await addFiles({
+        dir: '/tmp/repo/dir/',
+        filepath: '.',
+        auth: {
+          username: 'test-user',
+          password: 'test-password',
+        },
+      });
+    });
+
+    it('add files', () => {
+      expect(mockedGit.add).toHaveBeenCalledWith({
+        filepath: '.',
+        dir: '/tmp/repo/dir/',
+      });
+    });
+  });
+
+  it('with token', async () => {
+    await addFiles({
+      dir: '/tmp/repo/dir/',
+      filepath: '.',
+      auth: {
+        token: 'test-token',
+      },
+    });
+
+    expect(mockedGit.add).toHaveBeenCalledWith({
+      filepath: '.',
+      dir: '/tmp/repo/dir/',
+    });
+  });
+});
+
+describe('commitAndPushBranch', () => {
+  afterEach(() => {
+    jest.clearAllMocks();
+  });
+
+  describe('with minimal parameters', () => {
+    beforeEach(async () => {
+      await commitAndPushBranch({
+        dir: '/tmp/repo/dir/',
+        auth: {
+          username: 'test-user',
+          password: 'test-password',
+        },
+        commitMessage: 'commit message',
+      });
+    });
+
+    it('create commit', () => {
+      expect(mockedGit.commit).toHaveBeenCalledWith({
+        message: 'commit message',
+        dir: '/tmp/repo/dir/',
+        author: {
+          name: 'Scaffolder',
+          email: 'scaffolder@backstage.io',
+        },
+        committer: {
+          name: 'Scaffolder',
+          email: 'scaffolder@backstage.io',
+        },
+      });
+    });
+
+    it('pushes to the remote', () => {
+      expect(mockedGit.push).toHaveBeenCalledWith({
+        dir: '/tmp/repo/dir/',
+        remote: 'origin',
+        remoteRef: 'refs/heads/master',
+      });
+    });
+  });
+
+  it('with token', async () => {
+    await commitAndPushBranch({
+      dir: '/tmp/repo/dir/',
+      auth: {
+        token: 'test-token',
+      },
+      commitMessage: 'commit message',
+      gitAuthorInfo: {
+        name: 'gitCommitter',
+        email: 'gitCommitter@backstage.io',
+      },
+      logger: getVoidLogger(),
+    });
+
+    expect(mockedGit.commit).toHaveBeenCalledWith({
+      message: 'commit message',
+      dir: '/tmp/repo/dir/',
+      author: {
+        name: 'gitCommitter',
+        email: 'gitCommitter@backstage.io',
+      },
+      committer: {
+        name: 'gitCommitter',
+        email: 'gitCommitter@backstage.io',
+      },
+    });
+
+    expect(mockedGit.push).toHaveBeenCalledWith({
+      dir: '/tmp/repo/dir/',
+      remote: 'origin',
+      remoteRef: 'refs/heads/master',
+    });
+  });
+
+  it('allows overriding the default branch', async () => {
+    await commitAndPushBranch({
+      dir: '/tmp/repo/dir/',
+      auth: {
+        username: 'test-user',
+        password: 'test-password',
+      },
+      commitMessage: 'commit message',
+      branch: 'trunk',
+    });
+
+    expect(mockedGit.commit).toHaveBeenCalledWith({
+      message: 'commit message',
+      dir: '/tmp/repo/dir/',
+      author: {
+        name: 'Scaffolder',
+        email: 'scaffolder@backstage.io',
+      },
+      committer: {
+        name: 'Scaffolder',
+        email: 'scaffolder@backstage.io',
+      },
+    });
+
+    expect(mockedGit.push).toHaveBeenCalledWith({
+      dir: '/tmp/repo/dir/',
+      remote: 'origin',
+      remoteRef: 'refs/heads/trunk',
+    });
+  });
+
+  it('allows overriding the remoteRef', async () => {
+    await commitAndPushBranch({
+      dir: '/tmp/repo/dir/',
+      auth: {
+        username: 'test-user',
+        password: 'test-password',
+      },
+      commitMessage: 'commit message',
+      remoteRef: 'ABC123',
+    });
+
+    expect(mockedGit.commit).toHaveBeenCalledWith({
+      message: 'commit message',
+      dir: '/tmp/repo/dir/',
+      author: {
+        name: 'Scaffolder',
+        email: 'scaffolder@backstage.io',
+      },
+      committer: {
+        name: 'Scaffolder',
+        email: 'scaffolder@backstage.io',
+      },
+    });
+
+    expect(mockedGit.push).toHaveBeenCalledWith({
+      dir: '/tmp/repo/dir/',
+      remote: 'origin',
+      remoteRef: 'ABC123',
+    });
+  });
+});
diff --git a/plugins/scaffolder-node/src/actions/gitHelpers.ts b/plugins/scaffolder-node/src/actions/gitHelpers.ts
index 6d449a0a29..2026e75247 100644
--- a/plugins/scaffolder-node/src/actions/gitHelpers.ts
+++ b/plugins/scaffolder-node/src/actions/gitHelpers.ts
@@ -134,3 +134,123 @@ export async function commitAndPushRepo(input: {
 
   return { commitHash };
 }
+
+/**
+ * @public
+ */
+export async function cloneRepo(options: {
+  url: string;
+  dir: string;
+  // For use cases where token has to be used with Basic Auth
+  // it has to be provided as password together with a username
+  // which may be a fixed value defined by the provider.
+  auth: { username: string; password: string } | { token: string };
+  logger?: Logger | undefined;
+  ref?: string | undefined;
+  depth?: number | undefined;
+  noCheckout?: boolean | undefined;
+}): Promise<void> {
+  const { url, dir, auth, logger, ref, depth, noCheckout } = options;
+
+  const git = Git.fromAuth({
+    ...auth,
+    logger,
+  });
+
+  await git.clone({ url, dir, ref, depth, noCheckout });
+}
+
+/**
+ * @public
+ */
+export async function createBranch(options: {
+  dir: string;
+  ref: string;
+  // For use cases where token has to be used with Basic Auth
+  // it has to be provided as password together with a username
+  // which may be a fixed value defined by the provider.
+  auth: { username: string; password: string } | { token: string };
+  logger?: Logger | undefined;
+}): Promise<void> {
+  const { dir, ref, auth, logger } = options;
+  const git = Git.fromAuth({
+    ...auth,
+    logger,
+  });
+
+  await git.checkout({ dir, ref });
+}
+
+/**
+ * @public
+ */
+export async function addFiles(options: {
+  dir: string;
+  filepath: string;
+  // For use cases where token has to be used with Basic Auth
+  // it has to be provided as password together with a username
+  // which may be a fixed value defined by the provider.
+  auth: { username: string; password: string } | { token: string };
+  logger?: Logger | undefined;
+}): Promise<void> {
+  const { dir, filepath, auth, logger } = options;
+  const git = Git.fromAuth({
+    ...auth,
+    logger,
+  });
+
+  await git.add({ dir, filepath });
+}
+
+/**
+ * @public
+ */
+export async function commitAndPushBranch(options: {
+  dir: string;
+  // For use cases where token has to be used with Basic Auth
+  // it has to be provided as password together with a username
+  // which may be a fixed value defined by the provider.
+  auth: { username: string; password: string } | { token: string };
+  logger?: Logger | undefined;
+  commitMessage: string;
+  gitAuthorInfo?: { name?: string; email?: string };
+  branch?: string;
+  remoteRef?: string;
+  remote?: string;
+}): Promise<{ commitHash: string }> {
+  const {
+    dir,
+    auth,
+    logger,
+    commitMessage,
+    gitAuthorInfo,
+    branch = 'master',
+    remoteRef,
+    remote = 'origin',
+  } = options;
+  const git = Git.fromAuth({
+    ...auth,
+    logger,
+  });
+
+  // use provided info if possible, otherwise use fallbacks
+  const authorInfo = {
+    name: gitAuthorInfo?.name ?? 'Scaffolder',
+    email: gitAuthorInfo?.email ?? 'scaffolder@backstage.io',
+  };
+
+  const commitHash = await git.commit({
+    dir,
+    message: commitMessage,
+    author: authorInfo,
+    committer: authorInfo,
+  });
+
+  await git.push({
+    dir,
+    remote,
+    remoteRef: remoteRef ?? `refs/heads/${branch}`,
+  });
+
+  return { commitHash };
+}
diff --git a/plugins/scaffolder-node/src/actions/index.ts b/plugins/scaffolder-node/src/actions/index.ts
index 74a0bb61f9..c1c8551c53 100644
--- a/plugins/scaffolder-node/src/actions/index.ts
+++ b/plugins/scaffolder-node/src/actions/index.ts
@@ -25,5 +25,12 @@ export {
 } from './executeShellCommand';
 export { fetchContents, fetchFile } from './fetch';
 export { type ActionContext, type TemplateAction } from './types';
-export { initRepoAndPush, commitAndPushRepo } from './gitHelpers';
+export {
+  initRepoAndPush,
+  commitAndPushRepo,
+  commitAndPushBranch,
+  addFiles,
+  createBranch,
+  cloneRepo,
+} from './gitHelpers';
 export { parseRepoUrl, getRepoSourceDirectory } from './util';
diff --git a/yarn.lock b/yarn.lock
index 52b05b0192..003e6bd384 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -8045,6 +8045,7 @@ __metadata:
     "@backstage/errors": "workspace:^"
     "@backstage/integration": "workspace:^"
     "@backstage/plugin-scaffolder-node": "workspace:^"
+    fs-extra: 10.1.0
     msw: ^1.0.0
     node-fetch: ^2.6.7
     yaml: ^2.0.0