$ git clone -n https://src.fedoraproject.org/rpms/highfive.git /var/lib/mock/f42-build-864754-172559/root/chroot_tmpdir/scmroot/highfive
Cloning into '/var/lib/mock/f42-build-864754-172559/root/chroot_tmpdir/scmroot/highfive'...
$ git fetch origin 552b5cc9cb73145d57f096ba706cfbc775536977:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/highfive
 * [new ref]         552b5cc9cb73145d57f096ba706cfbc775536977 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 552b5cc Rebuild for hdf5 1.14.5