$ git clone -n https://gitee.com/src-anolis-os/libxml2.git /var/lib/mock/dist-an8.9-build-414480-72835/root/chroot_tmpdir/scmroot/libxml2
Cloning into '/var/lib/mock/dist-an8.9-build-414480-72835/root/chroot_tmpdir/scmroot/libxml2'...
$ git fetch origin a8:KOJI_FETCH_HEAD
From https://gitee.com/src-anolis-os/libxml2
 * [new branch]      a8         -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8902c0c [CVE] fix for CVE-2022-49043