change eventType for tag events from gogs

remote/gogs/gogs.go

@@ -234,7 +234,7 @@ func (c *client) Hook(r *http.Request) (*model.Repo, *model.Build, error) {
 	case "push":
 		var push *pushHook
 		push, err = parsePush(r.Body)
-		if err == nil {
+		if err == nil && push.RefType != "branch" {
 			repo = repoFromPush(push)
 			build = buildFromPush(push)
 		}

remote/gogs/helper.go

@@ -78,8 +78,6 @@ func buildFromPush(hook *pushHook) *model.Build {
 	case hook.RefType == "tag":
 		eventType = model.EventTag
 		message = "Tag " + hook.Ref
-	case hook.RefType == "branch":
-		eventType = ""
 	default:
 		eventType = model.EventPush
 		message = hook.Commits[0].Message