$ git clone -n https://src.fedoraproject.org/rpms/mutter.git /var/lib/mock/f40-build-756127-118689/root/chroot_tmpdir/scmroot/mutter
Cloning into '/var/lib/mock/f40-build-756127-118689/root/chroot_tmpdir/scmroot/mutter'...
$ git reset --hard 7858799ad89916f65b702e9357177fb38ce0b972
HEAD is now at 7858799 Update to 45.2