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.
Yawning is writing an SSH pluggable transport.
It needs #9162 (moved) and #9163 (moved) to be deployed without ugly hotfixes.
This ticket tracks its progress.