$ git clone -n https://gitee.com/wenyuzifang/lldb.git /var/lib/mock/dist-an23-build-480774-74252/root/chroot_tmpdir/scmroot/lldb
Cloning into '/var/lib/mock/dist-an23-build-480774-74252/root/chroot_tmpdir/scmroot/lldb'...
$ git fetch origin 86b843c8760f382d531b4a8dd66d19596ebd09ea:KOJI_FETCH_HEAD
From https://gitee.com/wenyuzifang/lldb
 * [new ref]         86b843c8760f382d531b4a8dd66d19596ebd09ea -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 86b843c Update code from upstream