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.
apt-get install snowflake
Speaking for Whonix, this would be very useful. Perhaps for Tails as well, but I am not speaking for them.
(Similar to legacy/trac#13160 (moved).)