code: func existsAlternate(objs string) (string, bool) {
  	objs = strings.TrimSpace(objs)
  	if strings.HasPrefix(objs, "\"") {
  		var err error
  
  		unquote := strings.LastIndex(objs, "\"")
  		if unquote == 0 {
  			return "", false
  		}
  
  		objs, err = strconv.Unquote(objs[:unquote+1])
  		if err != nil {
  			return "", false
  		}
  	}
  
  	storage := filepath.Join(filepath.Dir(objs), "lfs", "objects")
  
  	if tools.DirExists(storage) {
  		return storage, true
  	}
  	return "", false
  }
docs: // existsAlternate takes an object directory given in "objs" (read as a single,
  // line from .git/objects/info/alternates). If that is a satisfiable alternates
  // directory (i.e., it exists), the directory is returned along with "true". If
  // not, the empty string and false is returned instead.