$ git clone -n https://src.fedoraproject.org/rpms/postgresql16.git /var/lib/mock/f42-build-side-1-3533164-46342/root/chroot_tmpdir/scmroot/postgresql16
Cloning into '/var/lib/mock/f42-build-side-1-3533164-46342/root/chroot_tmpdir/scmroot/postgresql16'...
$ git fetch origin 85d0ff54cd956c6f2b6332710db00e3d0ee26be3:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/postgresql16
 * [new ref]         85d0ff54cd956c6f2b6332710db00e3d0ee26be3 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 85d0ff5 Update to 16.9 upstream release