$ git clone -n https://gitee.com/wenyuzifang/lldb.git /var/lib/mock/dist-an23-build-462677-73799/root/chroot_tmpdir/scmroot/lldb
Cloning into '/var/lib/mock/dist-an23-build-462677-73799/root/chroot_tmpdir/scmroot/lldb'...
$ git fetch origin f6caa2a10ee5532aafae861e0d6af8ce875c2400:KOJI_FETCH_HEAD
From https://gitee.com/wenyuzifang/lldb
 * [new ref]         f6caa2a10ee5532aafae861e0d6af8ce875c2400 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f6caa2a Update code from upstream