Add support for 'include_all_branches' flag when creating repository from a template

src/main/java/org/kohsuke/github/GHCreateRepositoryBuilder.java

@@ -98,6 +98,19 @@ public GHCreateRepositoryBuilder gitignoreTemplate(String language) throws IOExc
         return with("gitignore_template", language);
     }
 
+    /**
+     * Include all branches when creating from a template repository
+     *
+     * @param includeAllBranches
+     *            whether or not to include all branches from the template repository
+     * @return a builder to continue with building
+     * @throws IOException
+     *             In case of any networking error or error from the server.
+     */
+    public GHCreateRepositoryBuilder includeAllBranches(boolean includeAllBranches) throws IOException {
+        return with("include_all_branches", includeAllBranches);
+    }
+
     /**
      * Desired license template to apply.
      *

src/test/java/org/kohsuke/github/GHOrganizationTest.java

@@ -264,6 +264,37 @@ public void testCreateRepositoryWithTemplateAndGHRepository() throws IOException
 
     }
 
+    /**
+     * Test create a repository from a template with all branches included
+     *
+     * @throws IOException
+     *             Signals that an I/O exception has occurred.
+     * @throws InterruptedException
+     *             Signals that Thread.sleep() was interrupted
+     */
+
+    @Test
+    public void testCreateRepositoryWithTemplateAndIncludeAllBranches() throws IOException, InterruptedException {
+        cleanupRepository(GITHUB_API_TEST_ORG + '/' + GITHUB_API_TEST);
+
+        GHOrganization org = gitHub.getOrganization(GITHUB_API_TEST_ORG);
+        GHRepository templateRepository = org.getRepository(GITHUB_API_TEMPLATE_TEST);
+
+        GHRepository repository = gitHub.createRepository(GITHUB_API_TEST)
+                .fromTemplateRepository(templateRepository)
+                .includeAllBranches(true)
+                .owner(GITHUB_API_TEST_ORG)
+                .create();
+
+        assertThat(repository, notNullValue());
+
+        // give it a moment for branches to be created
+        Thread.sleep(1500);
+
+        assertThat(repository.getBranches().keySet(), equalTo(templateRepository.getBranches().keySet()));
+
+    }
+
     /**
      * Test create team.
      *

src/test/resources/org/kohsuke/github/GHOrganizationTest/wiremock/testCreateRepositoryWithTemplateAndIncludeAllBranches/__files/1-user.json

@@ -0,0 +1,48 @@
+{
+  "login": "leowebb",
+  "id": 6266758,
+  "node_id": "MDQ6VXNlcjYyNjY3NTg=",
+  "avatar_url": "https://avatars.githubusercontent.com/u/6266758?v=4",
+  "gravatar_id": "",
+  "url": "https://api.github.com/users/leowebb",
+  "html_url": "https://github.com/leowebb",
+  "followers_url": "https://api.github.com/users/leowebb/followers",
+  "following_url": "https://api.github.com/users/leowebb/following{/other_user}",
+  "gists_url": "https://api.github.com/users/leowebb/gists{/gist_id}",
+  "starred_url": "https://api.github.com/users/leowebb/starred{/owner}{/repo}",
+  "subscriptions_url": "https://api.github.com/users/leowebb/subscriptions",
+  "organizations_url": "https://api.github.com/users/leowebb/orgs",
+  "repos_url": "https://api.github.com/users/leowebb/repos",
+  "events_url": "https://api.github.com/users/leowebb/events{/privacy}",
+  "received_events_url": "https://api.github.com/users/leowebb/received_events",
+  "type": "User",
+  "user_view_type": "private",
+  "site_admin": false,
+  "name": null,
+  "company": null,
+  "blog": "",
+  "location": null,
+  "email": null,
+  "hireable": null,
+  "bio": null,
+  "twitter_username": null,
+  "notification_email": null,
+  "public_repos": 4,
+  "public_gists": 0,
+  "followers": 5,
+  "following": 8,
+  "created_at": "2013-12-26T20:32:21Z",
+  "updated_at": "2025-08-04T14:53:23Z",
+  "private_gists": 1,
+  "total_private_repos": 5,
+  "owned_private_repos": 5,
+  "disk_usage": 24,
+  "collaborators": 0,
+  "two_factor_authentication": true,
+  "plan": {
+    "name": "free",
+    "space": 976562499,
+    "collaborators": 0,
+    "private_repos": 10000
+  }
+}

src/test/resources/org/kohsuke/github/GHOrganizationTest/wiremock/testCreateRepositoryWithTemplateAndIncludeAllBranches/__files/2-orgs_hub4j-test-org.json

@@ -0,0 +1,76 @@
+{
+  "login": "hub4j-test-org",
+  "id": 7544739,
+  "node_id": "MDEyOk9yZ2FuaXphdGlvbjc1NDQ3Mzk=",
+  "url": "https://api.github.com/orgs/hub4j-test-org",
+  "repos_url": "https://api.github.com/orgs/hub4j-test-org/repos",
+  "events_url": "https://api.github.com/orgs/hub4j-test-org/events",
+  "hooks_url": "https://api.github.com/orgs/hub4j-test-org/hooks",
+  "issues_url": "https://api.github.com/orgs/hub4j-test-org/issues",
+  "members_url": "https://api.github.com/orgs/hub4j-test-org/members{/member}",
+  "public_members_url": "https://api.github.com/orgs/hub4j-test-org/public_members{/member}",
+  "avatar_url": "https://avatars.githubusercontent.com/u/7544739?v=4",
+  "description": "Hub4j Test Org Description (this could be null or blank too)",
+  "name": "Hub4j Test Org Name (this could be null or blank too)",
+  "company": null,
+  "blog": "https://hub4j.url.io/could/be/null",
+  "location": "Hub4j Test Org Location (this could be null or blank too)",
+  "email": "[email protected]",
+  "twitter_username": null,
+  "is_verified": false,
+  "has_organization_projects": true,
+  "has_repository_projects": true,
+  "public_repos": 27,
+  "public_gists": 0,
+  "followers": 2,
+  "following": 0,
+  "html_url": "https://github.com/hub4j-test-org",
+  "created_at": "2014-05-10T19:39:11Z",
+  "updated_at": "2025-08-05T00:53:03Z",
+  "archived_at": null,
+  "type": "Organization",
+  "total_private_repos": 8,
+  "owned_private_repos": 8,
+  "private_gists": 0,
+  "disk_usage": 12020,
+  "collaborators": 1,
+  "billing_email": "[email protected]",
+  "default_repository_permission": "none",
+  "members_can_create_repositories": false,
+  "two_factor_requirement_enabled": false,
+  "members_allowed_repository_creation_type": "none",
+  "members_can_create_public_repositories": false,
+  "members_can_create_private_repositories": false,
+  "members_can_create_internal_repositories": false,
+  "members_can_create_pages": true,
+  "members_can_fork_private_repositories": false,
+  "web_commit_signoff_required": false,
+  "deploy_keys_enabled_for_repositories": false,
+  "members_can_delete_repositories": true,
+  "members_can_change_repo_visibility": true,
+  "members_can_invite_outside_collaborators": true,
+  "members_can_delete_issues": false,
+  "display_commenter_full_name_setting_enabled": false,
+  "readers_can_create_discussions": true,
+  "members_can_create_teams": true,
+  "members_can_view_dependency_insights": true,
+  "default_repository_branch": "main",
+  "members_can_create_public_pages": true,
+  "members_can_create_private_pages": true,
+  "plan": {
+    "name": "free",
+    "space": 976562499,
+    "private_repos": 10000,
+    "filled_seats": 52,
+    "seats": 3
+  },
+  "advanced_security_enabled_for_new_repositories": false,
+  "dependabot_alerts_enabled_for_new_repositories": false,
+  "dependabot_security_updates_enabled_for_new_repositories": false,
+  "dependency_graph_enabled_for_new_repositories": false,
+  "secret_scanning_enabled_for_new_repositories": false,
+  "secret_scanning_push_protection_enabled_for_new_repositories": false,
+  "secret_scanning_push_protection_custom_link_enabled": false,
+  "secret_scanning_push_protection_custom_link": null,
+  "secret_scanning_validity_checks_enabled": false
+}

src/test/resources/org/kohsuke/github/GHOrganizationTest/wiremock/testCreateRepositoryWithTemplateAndIncludeAllBranches/__files/3-r_h_github-api-template-test.json

@@ -0,0 +1,161 @@
+{
+  "id": 776220577,
+  "node_id": "R_kgDOLkQvoQ",
+  "name": "github-api-template-test",
+  "full_name": "hub4j-test-org/github-api-template-test",
+  "private": false,
+  "owner": {
+    "login": "hub4j-test-org",
+    "id": 7544739,
+    "node_id": "MDEyOk9yZ2FuaXphdGlvbjc1NDQ3Mzk=",
+    "avatar_url": "https://avatars.githubusercontent.com/u/7544739?v=4",
+    "gravatar_id": "",
+    "url": "https://api.github.com/users/hub4j-test-org",
+    "html_url": "https://github.com/hub4j-test-org",
+    "followers_url": "https://api.github.com/users/hub4j-test-org/followers",
+    "following_url": "https://api.github.com/users/hub4j-test-org/following{/other_user}",
+    "gists_url": "https://api.github.com/users/hub4j-test-org/gists{/gist_id}",
+    "starred_url": "https://api.github.com/users/hub4j-test-org/starred{/owner}{/repo}",
+    "subscriptions_url": "https://api.github.com/users/hub4j-test-org/subscriptions",
+    "organizations_url": "https://api.github.com/users/hub4j-test-org/orgs",
+    "repos_url": "https://api.github.com/users/hub4j-test-org/repos",
+    "events_url": "https://api.github.com/users/hub4j-test-org/events{/privacy}",
+    "received_events_url": "https://api.github.com/users/hub4j-test-org/received_events",
+    "type": "Organization",
+    "user_view_type": "public",
+    "site_admin": false
+  },
+  "html_url": "https://github.com/hub4j-test-org/github-api-template-test",
+  "description": "a test template repository used to test kohsuke's github-api",
+  "fork": false,
+  "url": "https://api.github.com/repos/hub4j-test-org/github-api-template-test",
+  "forks_url": "https://api.github.com/repos/hub4j-test-org/github-api-template-test/forks",
+  "keys_url": "https://api.github.com/repos/hub4j-test-org/github-api-template-test/keys{/key_id}",
+  "collaborators_url": "https://api.github.com/repos/hub4j-test-org/github-api-template-test/collaborators{/collaborator}",
+  "teams_url": "https://api.github.com/repos/hub4j-test-org/github-api-template-test/teams",
+  "hooks_url": "https://api.github.com/repos/hub4j-test-org/github-api-template-test/hooks",
+  "issue_events_url": "https://api.github.com/repos/hub4j-test-org/github-api-template-test/issues/events{/number}",
+  "events_url": "https://api.github.com/repos/hub4j-test-org/github-api-template-test/events",
+  "assignees_url": "https://api.github.com/repos/hub4j-test-org/github-api-template-test/assignees{/user}",
+  "branches_url": "https://api.github.com/repos/hub4j-test-org/github-api-template-test/branches{/branch}",
+  "tags_url": "https://api.github.com/repos/hub4j-test-org/github-api-template-test/tags",
+  "blobs_url": "https://api.github.com/repos/hub4j-test-org/github-api-template-test/git/blobs{/sha}",
+  "git_tags_url": "https://api.github.com/repos/hub4j-test-org/github-api-template-test/git/tags{/sha}",
+  "git_refs_url": "https://api.github.com/repos/hub4j-test-org/github-api-template-test/git/refs{/sha}",
+  "trees_url": "https://api.github.com/repos/hub4j-test-org/github-api-template-test/git/trees{/sha}",
+  "statuses_url": "https://api.github.com/repos/hub4j-test-org/github-api-template-test/statuses/{sha}",
+  "languages_url": "https://api.github.com/repos/hub4j-test-org/github-api-template-test/languages",
+  "stargazers_url": "https://api.github.com/repos/hub4j-test-org/github-api-template-test/stargazers",
+  "contributors_url": "https://api.github.com/repos/hub4j-test-org/github-api-template-test/contributors",
+  "subscribers_url": "https://api.github.com/repos/hub4j-test-org/github-api-template-test/subscribers",
+  "subscription_url": "https://api.github.com/repos/hub4j-test-org/github-api-template-test/subscription",
+  "commits_url": "https://api.github.com/repos/hub4j-test-org/github-api-template-test/commits{/sha}",
+  "git_commits_url": "https://api.github.com/repos/hub4j-test-org/github-api-template-test/git/commits{/sha}",
+  "comments_url": "https://api.github.com/repos/hub4j-test-org/github-api-template-test/comments{/number}",
+  "issue_comment_url": "https://api.github.com/repos/hub4j-test-org/github-api-template-test/issues/comments{/number}",
+  "contents_url": "https://api.github.com/repos/hub4j-test-org/github-api-template-test/contents/{+path}",
+  "compare_url": "https://api.github.com/repos/hub4j-test-org/github-api-template-test/compare/{base}...{head}",
+  "merges_url": "https://api.github.com/repos/hub4j-test-org/github-api-template-test/merges",
+  "archive_url": "https://api.github.com/repos/hub4j-test-org/github-api-template-test/{archive_format}{/ref}",
+  "downloads_url": "https://api.github.com/repos/hub4j-test-org/github-api-template-test/downloads",
+  "issues_url": "https://api.github.com/repos/hub4j-test-org/github-api-template-test/issues{/number}",
+  "pulls_url": "https://api.github.com/repos/hub4j-test-org/github-api-template-test/pulls{/number}",
+  "milestones_url": "https://api.github.com/repos/hub4j-test-org/github-api-template-test/milestones{/number}",
+  "notifications_url": "https://api.github.com/repos/hub4j-test-org/github-api-template-test/notifications{?since,all,participating}",
+  "labels_url": "https://api.github.com/repos/hub4j-test-org/github-api-template-test/labels{/name}",
+  "releases_url": "https://api.github.com/repos/hub4j-test-org/github-api-template-test/releases{/id}",
+  "deployments_url": "https://api.github.com/repos/hub4j-test-org/github-api-template-test/deployments",
+  "created_at": "2024-03-22T23:35:17Z",
+  "updated_at": "2024-03-22T23:35:17Z",
+  "pushed_at": "2025-08-05T00:38:59Z",
+  "git_url": "git://github.com/hub4j-test-org/github-api-template-test.git",
+  "ssh_url": "[email protected]:hub4j-test-org/github-api-template-test.git",
+  "clone_url": "https://github.com/hub4j-test-org/github-api-template-test.git",
+  "svn_url": "https://github.com/hub4j-test-org/github-api-template-test",
+  "homepage": "http://github-api.kohsuke.org/",
+  "size": 0,
+  "stargazers_count": 0,
+  "watchers_count": 0,
+  "language": null,
+  "has_issues": true,
+  "has_projects": true,
+  "has_downloads": true,
+  "has_wiki": true,
+  "has_pages": false,
+  "has_discussions": false,
+  "forks_count": 0,
+  "mirror_url": null,
+  "archived": false,
+  "disabled": false,
+  "open_issues_count": 0,
+  "license": null,
+  "allow_forking": true,
+  "is_template": true,
+  "web_commit_signoff_required": false,
+  "topics": [],
+  "visibility": "public",
+  "forks": 0,
+  "open_issues": 0,
+  "watchers": 0,
+  "default_branch": "main",
+  "permissions": {
+    "admin": true,
+    "maintain": true,
+    "push": true,
+    "triage": true,
+    "pull": true
+  },
+  "temp_clone_token": "",
+  "allow_squash_merge": true,
+  "allow_merge_commit": true,
+  "allow_rebase_merge": true,
+  "allow_auto_merge": false,
+  "delete_branch_on_merge": false,
+  "allow_update_branch": false,
+  "use_squash_pr_title_as_default": false,
+  "squash_merge_commit_message": "COMMIT_MESSAGES",
+  "squash_merge_commit_title": "COMMIT_OR_PR_TITLE",
+  "merge_commit_message": "PR_TITLE",
+  "merge_commit_title": "MERGE_MESSAGE",
+  "custom_properties": {},
+  "organization": {
+    "login": "hub4j-test-org",
+    "id": 7544739,
+    "node_id": "MDEyOk9yZ2FuaXphdGlvbjc1NDQ3Mzk=",
+    "avatar_url": "https://avatars.githubusercontent.com/u/7544739?v=4",
+    "gravatar_id": "",
+    "url": "https://api.github.com/users/hub4j-test-org",
+    "html_url": "https://github.com/hub4j-test-org",
+    "followers_url": "https://api.github.com/users/hub4j-test-org/followers",
+    "following_url": "https://api.github.com/users/hub4j-test-org/following{/other_user}",
+    "gists_url": "https://api.github.com/users/hub4j-test-org/gists{/gist_id}",
+    "starred_url": "https://api.github.com/users/hub4j-test-org/starred{/owner}{/repo}",
+    "subscriptions_url": "https://api.github.com/users/hub4j-test-org/subscriptions",
+    "organizations_url": "https://api.github.com/users/hub4j-test-org/orgs",
+    "repos_url": "https://api.github.com/users/hub4j-test-org/repos",
+    "events_url": "https://api.github.com/users/hub4j-test-org/events{/privacy}",
+    "received_events_url": "https://api.github.com/users/hub4j-test-org/received_events",
+    "type": "Organization",
+    "user_view_type": "public",
+    "site_admin": false
+  },
+  "security_and_analysis": {
+    "secret_scanning": {
+      "status": "disabled"
+    },
+    "secret_scanning_push_protection": {
+      "status": "disabled"
+    },
+    "dependabot_security_updates": {
+      "status": "disabled"
+    },
+    "secret_scanning_non_provider_patterns": {
+      "status": "disabled"
+    },
+    "secret_scanning_validity_checks": {
+      "status": "disabled"
+    }
+  },
+  "network_count": 0,
+  "subscribers_count": 21
+}