$ git clone -n https://src.fedoraproject.org/rpms/python-sphinxtesters.git /var/lib/mock/f39-build-1426482-31599/root/chroot_tmpdir/scmroot/python-sphinxtesters
Cloning into '/var/lib/mock/f39-build-1426482-31599/root/chroot_tmpdir/scmroot/python-sphinxtesters'...
$ git fetch origin 47bd707b64f964735b6c4e3efb53abd31cb365c0:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-sphinxtesters
 * [new ref]         47bd707b64f964735b6c4e3efb53abd31cb365c0 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 47bd707 Rebuilt for https://fedoraproject.org/wiki/Fedora_38_Mass_Rebuild