$ git clone -n https://src.fedoraproject.org/rpms/ascii.git /var/lib/mock/f39-build-1840814-41982/root/chroot_tmpdir/scmroot/ascii
Cloning into '/var/lib/mock/f39-build-1840814-41982/root/chroot_tmpdir/scmroot/ascii'...
$ git fetch origin c663469ada3d3e76b1a8419d16e5a817a5d2e858:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ascii
 * [new ref]         c663469ada3d3e76b1a8419d16e5a817a5d2e858 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c663469 Migrated to SPDX license