$ git clone -n https://src.fedoraproject.org/rpms/hmat-oss.git /var/lib/mock/f41-build-1627103-24124/root/chroot_tmpdir/scmroot/hmat-oss
Cloning into '/var/lib/mock/f41-build-1627103-24124/root/chroot_tmpdir/scmroot/hmat-oss'...
$ git fetch origin e6f8821c4567151796b9b61fa956fdfe645b890d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/hmat-oss
 * [new ref]         e6f8821c4567151796b9b61fa956fdfe645b890d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e6f8821 initial import; rhbz#2263130