<!--IssueSummary start--> <details> <summary> Everyone can contribute. [Help move this issue forward](https://handbook.gitlab.com/handbook/marketing/developer-relations/contributor-success/community-contributors-workflows/#contributor-links) while earning points, leveling up and collecting rewards. </summary> - [Close this issue](https://contributors.gitlab.com/manage-issue?action=close&projectId=278964&issueIid=352811) </details> <!--IssueSummary end--> <!--- Please read this! Before opening a new issue, make sure to search for keywords in the issues filtered by the "regression" or "type::bug" label: - https://gitlab.com/gitlab-org/gitlab/issues?label_name%5B%5D=regression - https://gitlab.com/gitlab-org/gitlab/issues?label_name%5B%5D=type::bug and verify the issue you're about to submit isn't a duplicate. ---> ### Summary <!-- Summarize the bug encountered concisely. --> Default branch incorrectly after creating project using gitlab custom project template <!-- Please include any relevant screenshots or screen recordings that will assist reviewers and future readers. If you need help visually verifying the change, please leave a comment and ping a GitLab reviewer, maintainer, or MR coach. --> ### Steps to reproduce <!-- Describe how one can reproduce the issue - this is very important. Please use an ordered list. --> 1. Create a group `Group-A` 2. Create a subgroup `Subgroup-B` for `Group-A` 3. Set Subgroup-B to the `Custom project templates` 4. Create a project `Project1` for `Subgroup-B` 5. Create a new branch `Branch1` for `Project1` and change the default branch to `Branch1` 6. Create a new project `Project2` using custom project template `Project1` ### Example Project <!-- If possible, please create an example project here on GitLab.com that exhibits the problematic behavior, and link to it here in the bug report. If you are using an older version of GitLab, this will also determine whether the bug is fixed in a more recent version. --> ### What is the current *bug* behavior? The default branch of `Project2` is `main` ### What is the expected *correct* behavior? The default branch of `Project2` should be Branch1 ### Relevant logs and/or screenshots <!-- Paste any relevant logs - please use code blocks (```) to format console output, logs, and code as it's tough to read otherwise. -->    The `test-template-test10` project is created by `test10` template, but the default branch of `test-template-test10` is different from the template `test10` after creating . ### Output of checks <!-- If you are reporting a bug on GitLab.com, write: This bug happens on GitLab.com --> #### Results of GitLab environment info <!-- Input any relevant GitLab environment information if needed. --> <details> <summary>Expand for output related to GitLab environment info</summary> <pre> (For installations with omnibus-gitlab package run and paste the output of: `sudo gitlab-rake gitlab:env:info`) (For installations from source run and paste the output of: `sudo -u git -H bundle exec rake gitlab:env:info RAILS_ENV=production`) </pre> </details> #### Results of GitLab application Check <!-- Input any relevant GitLab application check information if needed. --> <details> <summary>Expand for output related to the GitLab application check</summary> <pre> (For installations with omnibus-gitlab package run and paste the output of: `sudo gitlab-rake gitlab:check SANITIZE=true`) (For installations from source run and paste the output of: `sudo -u git -H bundle exec rake gitlab:check RAILS_ENV=production SANITIZE=true`) (we will only investigate if the tests are passing) </pre> </details> ### Possible fixes <!-- If you can, link to the line of code that might be responsible for the problem. -->