Stable branch command does not work with auto-deploy branches on Security
When creating the stable branch for 13.3, the creation of the stable branch on Omnibus failed https://ops.gitlab.net/gitlab-org/release/tools/-/jobs/1662170:
2020-08-20 18:35:43.646609 F Rake::Task -- Task failed -- Exception: Gitlab::Error::InternalServerError: Server responded with code 500, message: 500 Internal Server Error. Request URI: https://gitlab.com/api/v4/projects/gitlab%2Dorg%2Fomnibus%2Dgitlab/repository/branches
It was searching the current auto-deploy branch on Canonical, but since auto-deploy branches exist on Security a 500
error was thrown.
As a workaround, Release Manager manually pushed the branch to Canonical and executed the command again. A long-term solution will be to search for these branches on Security.