Support unhiding of all refs via Gitaly
Requires Gitaly 0.27.0 to work: https://gitlab.com/gitlab-org/gitaly/merge_requests/242, https://gitlab.com/gitlab-org/gitaly-proto/merge_requests/46
Allows GeoNodes to fetch all references (e.g. refs/keep-around/XXX
) and not ones hidden by default in GitLab.
Edited by Stan Hu