$ git clone -n https://gitee.com/src-opencloudos-rpms/libxml2.git /var/lib/mock/dist-oc9-build-175222-79891/root/chroot_tmpdir/scmroot/libxml2
Cloning into '/var/lib/mock/dist-oc9-build-175222-79891/root/chroot_tmpdir/scmroot/libxml2'...
$ git fetch origin 38a1c59ba237010d66c46b5af84c8760e5ce6d6b:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/libxml2
 * [new ref]         38a1c59ba237010d66c46b5af84c8760e5ce6d6b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 38a1c59 import libxml2-2.12.10-1.tl4