$ git clone -n https://src.fedoraproject.org/rpms/stats-collect.git /var/lib/mock/f40-build-2289422-55871/root/chroot_tmpdir/scmroot/stats-collect
Cloning into '/var/lib/mock/f40-build-2289422-55871/root/chroot_tmpdir/scmroot/stats-collect'...
$ git fetch origin 214d0db6da7fde30e5d666c76b5677cfc7d599ac:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/stats-collect
 * [new ref]         214d0db6da7fde30e5d666c76b5677cfc7d599ac -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 214d0db Update to 1.0.20