$ git clone -n https://gitee.com/uestc-cheng/libxml2.git /var/lib/mock/dist-an8.8-build-299155-65888/root/chroot_tmpdir/scmroot/libxml2
Cloning into '/var/lib/mock/dist-an8.8-build-299155-65888/root/chroot_tmpdir/scmroot/libxml2'...
$ git fetch origin 7ffde6d0d0a83d0e78e5bf556f5824fedda7634b:KOJI_FETCH_HEAD
From https://gitee.com/uestc-cheng/libxml2
 * [new ref]         7ffde6d0d0a83d0e78e5bf556f5824fedda7634b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7ffde6d update libxml2-2.9.7-CVE-2023-28484.patch.