$ git clone -n https://src.fedoraproject.org/rpms/coin-or-Dip.git /var/lib/mock/f42-build-3367072-45050/root/chroot_tmpdir/scmroot/coin-or-Dip
Cloning into '/var/lib/mock/f42-build-3367072-45050/root/chroot_tmpdir/scmroot/coin-or-Dip'...
$ git fetch origin cb8f38b6d479d744c489ef148464189ee350345d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/coin-or-Dip
 * [new ref]         cb8f38b6d479d744c489ef148464189ee350345d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at cb8f38b Orphaned for 6+ weeks