$ git clone -n https://gitee.com/little-huaduo/clang.git /var/lib/mock/dist-an23-build-503559-74854/root/chroot_tmpdir/scmroot/clang
Cloning into '/var/lib/mock/dist-an23-build-503559-74854/root/chroot_tmpdir/scmroot/clang'...
$ git fetch origin b07fbb51a226f8b5ca922dace90390702495eaef:KOJI_FETCH_HEAD
From https://gitee.com/little-huaduo/clang
 * [new ref]         b07fbb51a226f8b5ca922dace90390702495eaef -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b07fbb5 Add Sw64 support for clang