$ git clone -n https://src.fedoraproject.org/rpms/python-dns.git /var/lib/mock/f39-build-1887036-42784/root/chroot_tmpdir/scmroot/python-dns
Cloning into '/var/lib/mock/f39-build-1887036-42784/root/chroot_tmpdir/scmroot/python-dns'...
$ git fetch origin 15ded307d74a14aa90b86ce43eb326af4b9c5f64:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-dns
 * [new ref]         15ded307d74a14aa90b86ce43eb326af4b9c5f64 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 15ded30 Update to 2.4.2 (rhbz#2230509)