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.
https://github.com/tomrittervg/tor-browser-build/commit/f374c28cb89fd091a84a17fcacf6e81e662cf957
and
https://github.com/tomrittervg/tor-browser-build/commit/db075a1a936b8a4432f56bba3b69cde4bdc8e315
