$ git clone -n https://src.fedoraproject.org/rpms/python-psycopg3.git /var/lib/mock/f39-build-1632675-39779/root/chroot_tmpdir/scmroot/python-psycopg3
Cloning into '/var/lib/mock/f39-build-1632675-39779/root/chroot_tmpdir/scmroot/python-psycopg3'...
$ git fetch origin f601e08377c34d3f722507ed8d659dab9b5b7115:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-psycopg3
 * [new ref]         f601e08377c34d3f722507ed8d659dab9b5b7115 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f601e08 Rebase to the latest upstream version (rhbz#2229392)