$ git clone -n https://src.fedoraproject.org/rpms/ksquares.git /var/lib/mock/f39-build-1688979-41120/root/chroot_tmpdir/scmroot/ksquares
Cloning into '/var/lib/mock/f39-build-1688979-41120/root/chroot_tmpdir/scmroot/ksquares'...
$ git fetch origin b30b89989c971e70a7b0810fee267e7e8fc7f7da:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ksquares
 * [new ref]         b30b89989c971e70a7b0810fee267e7e8fc7f7da -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b30b899 23.08.3