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.
http://www.freedesktop.org/wiki/Software/systemd/ redirects to
https://freedesktop.org/www/Software/systemd/ which works fine, but that page links to
http://www.freedesktop.org/software/systemd/ which HTTPS Everywhere 4.0dev9 redirects to the nonexistent