$ git clone -n https://gitee.com/src-opencloudos-rpms/libxml2.git /var/lib/mock/dist-oc9-build-236758-82322/root/chroot_tmpdir/scmroot/libxml2
Cloning into '/var/lib/mock/dist-oc9-build-236758-82322/root/chroot_tmpdir/scmroot/libxml2'...
$ git fetch origin 4e24477ddaa55dd354c5669dbce2bfa0a0425847:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/libxml2
 * [new ref]         4e24477ddaa55dd354c5669dbce2bfa0a0425847 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4e24477 import libxml2-2.11.5-11.tl4