$ git clone -n https://src.fedoraproject.org/rpms/python-astroquery.git /var/lib/mock/f41-build-side-1-2905773-34716/root/chroot_tmpdir/scmroot/python-astroquery
Cloning into '/var/lib/mock/f41-build-side-1-2905773-34716/root/chroot_tmpdir/scmroot/python-astroquery'...
$ git fetch origin b63db057c8ada9e4387a490dad8860dd9174955e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-astroquery
 * [new ref]         b63db057c8ada9e4387a490dad8860dd9174955e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b63db05 [skip changelog] Remove determinism workaround