$ git clone -n https://gitee.com/ocs-bot/diffstat.git /var/lib/mock/dist-ocs23-build-115544-7917/root/chroot_tmpdir/scmroot/diffstat
Cloning into '/var/lib/mock/dist-ocs23-build-115544-7917/root/chroot_tmpdir/scmroot/diffstat'...
$ git fetch origin HEAD:KOJI_FETCH_HEAD
From https://gitee.com/ocs-bot/diffstat
 * [new ref]         HEAD       -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8f3cfb0 Upgrade to version 1.65