$ git clone -n https://gitee.com/fundawang/libxml2.git /var/lib/mock/dist-an23-build-353350-71018/root/chroot_tmpdir/scmroot/libxml2
Cloning into '/var/lib/mock/dist-an23-build-353350-71018/root/chroot_tmpdir/scmroot/libxml2'...
$ git fetch origin 0355b8bd6d07c57856f918ba0cbe2fa6ae969215:KOJI_FETCH_HEAD
From https://gitee.com/fundawang/libxml2
 * [new ref]         0355b8bd6d07c57856f918ba0cbe2fa6ae969215 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 0355b8b 2.11.7