$ git clone -n https://gitee.com/opencloudos-stream/diffutils.git /var/lib/mock/dist-ocs23-build-23726-1191/root/chroot_tmpdir/scmroot/diffutils
Cloning into '/var/lib/mock/dist-ocs23-build-23726-1191/root/chroot_tmpdir/scmroot/diffutils'...
$ git fetch origin HEAD:KOJI_FETCH_HEAD
From https://gitee.com/opencloudos-stream/diffutils
 * [new ref]                    -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 13b5e62 !1 update to 3.10 Merge pull request !1 from abushwang/master