$ git clone -n https://src.fedoraproject.org/rpms/python-sphinxcontrib-blockdiag.git /var/lib/mock/f39-build-1426456-31596/root/chroot_tmpdir/scmroot/python-sphinxcontrib-blockdiag
Cloning into '/var/lib/mock/f39-build-1426456-31596/root/chroot_tmpdir/scmroot/python-sphinxcontrib-blockdiag'...
$ git fetch origin 5a71786d574c8c7dabb5a3651a4f218f06343fb6:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-sphinxcontrib-blockdiag
 * [new ref]         5a71786d574c8c7dabb5a3651a4f218f06343fb6 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5a71786 Rebuilt for https://fedoraproject.org/wiki/Fedora_38_Mass_Rebuild