$ git clone -n https://src.fedoraproject.org/rpms/perftest.git /var/lib/mock/f40-build-792331-138330/root/chroot_tmpdir/scmroot/perftest
Cloning into '/var/lib/mock/f40-build-792331-138330/root/chroot_tmpdir/scmroot/perftest'...
$ git fetch origin c0c60c13af3aed05636cf990dd27a3f4177dd517:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perftest
 * [new ref]         c0c60c13af3aed05636cf990dd27a3f4177dd517 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c0c60c1 migrated to SPDX license