$ git clone -n https://src.fedoraproject.org/rpms/kgoldrunner.git /var/lib/mock/f42-build-side-1-3583495-46889/root/chroot_tmpdir/scmroot/kgoldrunner
Cloning into '/var/lib/mock/f42-build-side-1-3583495-46889/root/chroot_tmpdir/scmroot/kgoldrunner'...
$ git fetch origin be645b58f707a7f3ff33a3a2258d7dd298546539:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kgoldrunner
 * [new ref]         be645b58f707a7f3ff33a3a2258d7dd298546539 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at be645b5 25.04.3