$ git clone -n https://src.fedoraproject.org/rpms/zpaqfranz.git /var/lib/mock/f42-build-3272216-41305/root/chroot_tmpdir/scmroot/zpaqfranz
Cloning into '/var/lib/mock/f42-build-3272216-41305/root/chroot_tmpdir/scmroot/zpaqfranz'...
$ git fetch origin f156b42413688ae5ac60822a601d54583b64dfc9:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/zpaqfranz
 * [new ref]         f156b42413688ae5ac60822a601d54583b64dfc9 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f156b42 61.1 bump