$ git clone -n https://src.fedoraproject.org/rpms/gimp3.git /var/lib/mock/f41-build-848032-164378/root/chroot_tmpdir/scmroot/gimp3
Cloning into '/var/lib/mock/f41-build-848032-164378/root/chroot_tmpdir/scmroot/gimp3'...
$ git fetch origin 331612a71926a320063623d886d9caff5038e89b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gimp3
 * [new ref]         331612a71926a320063623d886d9caff5038e89b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 331612a Merge branch 'f40' into f41