$ git clone -n https://src.fedoraproject.org/rpms/python-psycopg3.git /var/lib/mock/f40-build-2378295-60443/root/chroot_tmpdir/scmroot/python-psycopg3
Cloning into '/var/lib/mock/f40-build-2378295-60443/root/chroot_tmpdir/scmroot/python-psycopg3'...
$ git fetch origin a164a1fcf20c96c390ae145be1e4921e532afba4:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-psycopg3
 * [new ref]         a164a1fcf20c96c390ae145be1e4921e532afba4 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a164a1f Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild