code: func GetTag(s storer.EncodedObjectStorer, h plumbing.Hash) (*Tag, error) {
  	o, err := s.EncodedObject(plumbing.TagObject, h)
  	if err != nil {
  		return nil, err
  	}
  
  	return DecodeTag(s, o)
  }
docs: // GetTag gets a tag from an object storer and decodes it.