$ git clone -n https://src.fedoraproject.org/rpms/tslib.git /var/lib/mock/f40-build-2206538-52056/root/chroot_tmpdir/scmroot/tslib
Cloning into '/var/lib/mock/f40-build-2206538-52056/root/chroot_tmpdir/scmroot/tslib'...
$ git fetch origin b09eed604549783e639a5109a693fceb7bfb88c2:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/tslib
 * [new ref]         b09eed604549783e639a5109a693fceb7bfb88c2 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b09eed6 Migrate to SPDX license