$ git clone -n https://src.fedoraproject.org/rpms/python-psycopg2.git /var/lib/mock/f39-build-1554141-37035/root/chroot_tmpdir/scmroot/python-psycopg2
Cloning into '/var/lib/mock/f39-build-1554141-37035/root/chroot_tmpdir/scmroot/python-psycopg2'...
$ git fetch origin be7917c31a38ae18c5225866e0d0d9d18ab8cfd2:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-psycopg2
 * [new ref]         be7917c31a38ae18c5225866e0d0d9d18ab8cfd2 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at be7917c Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild