GitLab is used only for code review, issue tracking and project management. Canonical locations for source code are still https://gitweb.torproject.org/ https://git.torproject.org/ and git-rw.torproject.org.
We're testing this new fantastic tool, Anonymous GitLab Ticketing.
Let's list on this ticket all the repositories that we want to integrate there.
(cc. @emmapeel, @gaba)