Check out the default branch rather than master
In data_repo_renderer.GitUpdate, the master branch is checked out explicitly.
Replace this by the default branch of origin.
A replacement for the old instance build runner (old tags dind/docker-in-docker) is available. For details see https://git.geomar.de/open-source/gitlab-docu/-/wikis/build_runner
In data_repo_renderer.GitUpdate, the master branch is checked out explicitly.
Replace this by the default branch of origin.