$ git clone -n https://src.fedoraproject.org/rpms/python-pycxx.git /var/lib/mock/f39-build-1430654-31736/root/chroot_tmpdir/scmroot/python-pycxx
Cloning into '/var/lib/mock/f39-build-1430654-31736/root/chroot_tmpdir/scmroot/python-pycxx'...
$ git fetch origin 8ae9d06888fc3821e91133222d6c7c0be86e83ca:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-pycxx
 * [new ref]         8ae9d06888fc3821e91133222d6c7c0be86e83ca -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8ae9d06 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild