$ git clone -n https://gitee.com/opencloudos-stream/libxml2.git /var/lib/mock/dist-ocs23-build-17184-1041/root/chroot_tmpdir/scmroot/libxml2
Cloning into '/var/lib/mock/dist-ocs23-build-17184-1041/root/chroot_tmpdir/scmroot/libxml2'...
$ git fetch origin HEAD:KOJI_FETCH_HEAD
From https://gitee.com/opencloudos-stream/libxml2
 * [new ref]                    -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5b99125 !2 update to 2.11.4 Merge pull request !2 from abushwang/master