$ git clone -n https://src.fedoraproject.org/rpms/python-libsass.git /var/lib/mock/f40-build-796522-140694/root/chroot_tmpdir/scmroot/python-libsass
Cloning into '/var/lib/mock/f40-build-796522-140694/root/chroot_tmpdir/scmroot/python-libsass'...
$ git fetch origin a3e7cae8b8cda78f07575ef5e82b656591057c98:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-libsass
 * [new ref]         a3e7cae8b8cda78f07575ef5e82b656591057c98 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a3e7cae Update to 0.23.0 (close RHBZ#2257155)