$ git clone -n https://gitee.com/src-opencloudos-rpms/libxml2.git /var/lib/mock/dist-oc9-build-182611-80161/root/chroot_tmpdir/scmroot/libxml2
Cloning into '/var/lib/mock/dist-oc9-build-182611-80161/root/chroot_tmpdir/scmroot/libxml2'...
$ git fetch origin e9259cbb76369b7196d1b8cb8bc7f0764b4fe35b:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/libxml2
 * [new ref]         e9259cbb76369b7196d1b8cb8bc7f0764b4fe35b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e9259cb import libxml2-2.11.5-9.tl4