$ git clone -n https://src.fedoraproject.org/rpms/thc-ipv6.git /var/lib/mock/f41-build-side-1-2670605-29060/root/chroot_tmpdir/scmroot/thc-ipv6
Cloning into '/var/lib/mock/f41-build-side-1-2670605-29060/root/chroot_tmpdir/scmroot/thc-ipv6'...
$ git fetch origin 7eaf39588df3a6a9f7799e2799805613e2dfd560:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/thc-ipv6
 * [new ref]         7eaf39588df3a6a9f7799e2799805613e2dfd560 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7eaf395 Migrate to SPDX license (temporary ids)