$ git clone -n https://src.fedoraproject.org/rpms/hdf5.git /var/lib/mock/f42-build-3406837-45143/root/chroot_tmpdir/scmroot/hdf5
Cloning into '/var/lib/mock/f42-build-3406837-45143/root/chroot_tmpdir/scmroot/hdf5'...
$ git fetch origin 6b128f114bd0c795ead86d9e5d3b1f2b1def3eb2:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/hdf5
 * [new ref]         6b128f114bd0c795ead86d9e5d3b1f2b1def3eb2 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6b128f1 t_multi_dset/t_pmulti_dset is still flaky on ppc64le