$ git clone -n https://src.fedoraproject.org/rpms/ghc-disk-free-space.git /var/lib/mock/f41-build-837601-159296/root/chroot_tmpdir/scmroot/ghc-disk-free-space
Cloning into '/var/lib/mock/f41-build-837601-159296/root/chroot_tmpdir/scmroot/ghc-disk-free-space'...
$ git fetch origin afd27804e827232829af8e818ff0abc4af5513bd:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-disk-free-space
 * [new ref]         afd27804e827232829af8e818ff0abc4af5513bd -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at afd2780 bump release