anchor.diff:    }
   
     String toString() {
  -    String str = "commit " + _sha + "\n";
  +    String str = "commit " + sha + "\n";
       str += "Author: " + author.name + " <" + author.email + ">\n";
       str += "Date:  " + author.date.toString() + "\n\n";
       str += _message;
  
positive.code: 
    CommitObject(String sha, var data, [rawObj]) {
      this.type = ObjectTypes.COMMIT_STR;
      this._sha = sha;
      this.rawObj = rawObj;
  
      if (data is Uint8List) {
  
negative.code:     }
    }
  
    GitObject([this.sha, this.data]);
  
    // The type of git object.
    String type;
    dynamic data;
    String sha;
  
    String toString() => data.toString();
  }
  