$ git clone -n https://src.fedoraproject.org/rpms/xtideuniversalbios.git /var/lib/mock/f40-build-2046291-48859/root/chroot_tmpdir/scmroot/xtideuniversalbios
Cloning into '/var/lib/mock/f40-build-2046291-48859/root/chroot_tmpdir/scmroot/xtideuniversalbios'...
$ git fetch origin c71365834c936a911a500223421e91f54f6ff36d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/xtideuniversalbios
 * [new ref]         c71365834c936a911a500223421e91f54f6ff36d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c713658 Update snapshot to 625