$ git clone -n https://src.fedoraproject.org/rpms/libnuml.git /var/lib/mock/f40-build-2200258-51764/root/chroot_tmpdir/scmroot/libnuml
Cloning into '/var/lib/mock/f40-build-2200258-51764/root/chroot_tmpdir/scmroot/libnuml'...
$ git fetch origin dc2b7bb27e94ed76ee4d7cd13dde745cb4d51cd3:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libnuml
 * [new ref]         dc2b7bb27e94ed76ee4d7cd13dde745cb4d51cd3 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at dc2b7bb Fix typo in changelog