Gitlab::Git::Hook should set the GL_REPOSITORY environment variable
https://sentry.gitlap.com/gitlab/devgitlaborg/issues/34971/events/2130800/
When introducing the GL_REPOSITORY variable we overlooked the Gitlab::Git::Hook class.
This has been causing PostReceive jobs to fail on dev.gitlab.org since gitlab-shell!136 (merged) was merged.
The GL_REPOSITORY variable should be among those set on the hook process.
Edited by Jacob Vosmaer