$ git clone -n https://gitee.com/src-opencloudos-rpms/libxml2.git /var/lib/mock/dist-oc9-build-176108-79980/root/chroot_tmpdir/scmroot/libxml2
Cloning into '/var/lib/mock/dist-oc9-build-176108-79980/root/chroot_tmpdir/scmroot/libxml2'...
$ git fetch origin e671186d31f8529cbceb278f48ae6cc4fc5df02d:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/libxml2
 * [new ref]         e671186d31f8529cbceb278f48ae6cc4fc5df02d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e671186 import libxml2-2.11.5-8.tl4