code: def git_working_dir(func):
      
  
      @wraps(func)
      def set_git_working_dir(self, *args, **kwargs):
          cur_wd = os.getcwd()
          os.chdir(self.repo.working_tree_dir)
          try:
              return func(self, *args, **kwargs)
          finally:
              os.chdir(cur_wd)
          # END handle working dir
      # END wrapper
  
      return set_git_working_dir
docs: Decorator which changes the current working dir to the one of the git
      repository in order to assure relative paths are handled correctly