$ git clone -n https://src.fedoraproject.org/rpms/python-packvers.git /var/lib/mock/f39-build-2228786-53099/root/chroot_tmpdir/scmroot/python-packvers
Cloning into '/var/lib/mock/f39-build-2228786-53099/root/chroot_tmpdir/scmroot/python-packvers'...
$ git fetch origin 98d8189221f560e4448689a8ccfd2bf2aece3d9e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-packvers
 * [new ref]         98d8189221f560e4448689a8ccfd2bf2aece3d9e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 98d8189 Add missing BR