下载一个重定向的链接文件失败 about saber HOT 2 CLOSED

go(function(){
    $save_path = './v1.0.6.tar.gz';
    $before_redirect = function (\Swlib\Saber\Request $request) use ($save_path) {
            $request->withDownloadDir($save_path);
    }; 
    SaberGM::download(
        'https://github.com/swlib/saber/archive/v1.0.6.tar.gz',
        $save_path,
        0,
        ['before_redirect' => $before_redirect]
    );
});