code: func (o *ScanRefsOptions) GetName(sha string) (string, bool) {
  	o.Mutex.Lock()
  	defer o.Mutex.Unlock()
  
  	name, ok := o.Names[sha]
  	return name, ok
  }
docs: // GetName returns the name associated with a given blob/tree sha and "true" if
  // it exists, or ("", false) if it doesn't.
  //
  // GetName is guarded by a use of o.Mutex, and is goroutine safe.