ci: Don't try running dist-mutter outside of a git repo
Because meson dist
will fail in that case:
Dist currently only works with Git or Mercurial repos
Being away from the git repo would only happen on non-marge CI runs of 'deploy' and only if the MR contains meson changes. So the bug went unnoticed when introduced in !3083 (merged) because it didn't contain meson changes. To fix it we just revert one line of !3083 (merged).
Fixes: #2908 (closed)
Edited by Daniel van Vugt