diff --git a/lib/oto/data/command_data.dart b/lib/oto/data/command_data.dart
index 8e5b19d..8f255b7 100644
--- a/lib/oto/data/command_data.dart
+++ b/lib/oto/data/command_data.dart
@@ -384,7 +384,8 @@ class DataGitCount extends DataParam {
 class DataGitRev extends DataParam {
   DataGitRev();
 
-  late String? branch; //null will be show local HEAD
+  //null will be show local HEAD. Get last revision must be set branch
+  late String? branch;
 
   @JsonKey(name: 'result-value')
   late String result_value;