GitWrapper\GitWorkingCopy::hasChanges PHP Method

    public function hasChanges()
    {
        $output = $this->getStatus();
        return !empty($output);
    }

 /**
  * @return bool
  * @throws GitException
  */
 public function precheck()
 {
     if ($this->git->hasChanges()) {
         throw new GitException('Working Copy is not clean, please commit or stash changes first.');
     }
     return true;
 }