$ git clone -n https://git.cclinux.org/stage/rpms/mutter.git /var/lib/mock/dist-circle9-build-124657-88456/root/chroot_tmpdir/scmroot/mutter
Cloning into '/var/lib/mock/dist-circle9-build-124657-88456/root/chroot_tmpdir/scmroot/mutter'...
$ git fetch origin 8b0146b73f633149bd5094742c5225a2a92aa871:KOJI_FETCH_HEAD
From https://git.cclinux.org/stage/rpms/mutter
 * [new ref]         8b0146b73f633149bd5094742c5225a2a92aa871 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8b0146b import mutter-40.9-20.el9