提取Github repo到服务器文件夹

我使用PHP将主repo zip从Github保存到一个临时文件夹，提取它然后移动文件夹&文件到主位置，但文件夹&如果我将移动目标设置为新文件夹，则文件不会移动到根文件夹上。

问题可能与文件夹&文件权限，因为这个根文件夹是Magento平台，并具有chmod Magento设置.

//save to folder
$sync_address = 'tmp';
//move to folder
$sync_move = getcwd().'';
//save master to server
$f = file_put_contents("tmp.zip", fopen("https://github.com/MyGithub/MyRepo/archive/master.zip", 'r'), LOCK_EX);
if(FALSE === $f)
  echo 'Couldn''t write to file<br>';
  $zip = new ZipArchive;
  //open tmp.zip
  $res = $zip->open('tmp.zip');
if ($res === TRUE) {
  //extract to tmp folder
  $zip->extractTo($sync_address);
  $zip->close();
  echo 'Successfully opened or extracted zip file.<br>';
} else {
  echo 'Falied opening or extracting zip file.<br>';
}
   //foreach extracted folder only in tmp (as we only want folder & files inside the first github archive folder IE MyRepo-master.zip/MyRepo/actual structure
   $directories = glob($sync_address . '/*' , GLOB_ONLYDIR);
   foreach($directories as $dir) {
   $directoriesSync = glob($dir . '/*');
   echo '<br>'.$dir.' Folder Exists <br>';
   //move files & folders to root folder
   //does not work, no files moved
   //works if move folder set as root folder/another folder/
   rename($dir, $sync_move);
   //for each directory & file move via cmd
   //move files & folders to root folder
   //does not work, no files moved
   //works if move folder set as root folder/another folder/
   foreach($directoriesSync as $dirSync) {
     shell_exec('mv '.$dirSync.' '.$sync_move.'');
     echo 'Successfully moved '.$dirSync.' to '.$sync_move.'<br>';  
   }

}