Gemnasium GEMNASIUM_DB_REF_NAME option should accept all kind of refs

Problem to solve

We rolled out a new GEMNASIUM_DB_REF_NAME option to allow users to specify which DB to use with Gemnasium but it currently only works with branches.

Intended users

Proposal

Make Gemnasium logic compatible with all kind of refs (e.g. tags)

Permissions and Security

Documentation

Testing

What does success look like, and how can we measure that?

What is the type of buyer?

GitLab Ultimate

Links / references