$ git clone -n https://src.fedoraproject.org/rpms/python-Rtree.git /var/lib/mock/f39-build-1555947-37146/root/chroot_tmpdir/scmroot/python-Rtree
Cloning into '/var/lib/mock/f39-build-1555947-37146/root/chroot_tmpdir/scmroot/python-Rtree'...
$ git fetch origin 9aef29f5498231c8271e9d5635c244ea611024db:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-Rtree
 * [new ref]         9aef29f5498231c8271e9d5635c244ea611024db -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9aef29f Update to 1.1.0 (close RHBZ#2244705)