diff --git a/presentation/controller/webhooks.go b/presentation/controller/webhooks.go
index b96d1c2a..7b0a11a6 100644
--- a/presentation/controller/webhooks.go
+++ b/presentation/controller/webhooks.go
@@ -54,7 +54,7 @@ func (c *JobController) ServeHTTP(w http.ResponseWriter, r *http.Request) {
 			return
 		}
 
-		ctx, repo, ref, command, err := c.parseIssueComment(event, requestId, runtimeUrl)
+		ctx, repo, ref, sha, command, err := c.parseIssueComment(event, requestId, runtimeUrl)
 		if err == SkipBuild {
 			logger.Info(requestId, "skip build")
 			w.WriteHeader(http.StatusOK)
@@ -65,14 +65,7 @@ func (c *JobController) ServeHTTP(w http.ResponseWriter, r *http.Request) {
 			http.Error(w, err.Error(), http.StatusInternalServerError)
 			return
 		}
-		pr, err := c.GitHub.GetPullRequest(ctx, repo, event.GetIssue().GetNumber())
-		if err != nil {
-			logger.Errorf(requestId, "%+v", err)
-			http.Error(w, err.Error(), http.StatusInternalServerError)
-			return
-		}
 
-		sha := pr.GetHead().GetSHA()
 		c.GitHub.CreateCommitStatus(ctx, repo, plumbing.NewHash(sha), github.PENDING, "waiting...")
 		go c.Runner.Run(ctx, repo, ref, command...)
 	case "push":
@@ -104,13 +97,13 @@ func (c *JobController) parseIssueComment(
 	event *go_github.IssueCommentEvent,
 	requestId uuid.UUID,
 	url *url.URL,
-) (ctx context.Context, repo *go_github.Repository, ref string, command []string, err error) {
+) (ctx context.Context, repo *go_github.Repository, ref string, sha string, command []string, err error) {
 	if !isValidAction(event.Action) {
-		return nil, nil, "", nil, SkipBuild
+		return nil, nil, "", "", nil, SkipBuild
 	}
 
 	if !regexp.MustCompile("^ci\\s+[^\\s]+").Match([]byte(event.Comment.GetBody())) {
-		return nil, nil, "", nil, SkipBuild
+		return nil, nil, "", "", nil, SkipBuild
 	}
 	phrase := regexp.MustCompile("^ci\\s+").ReplaceAllString(event.Comment.GetBody(), "")
 	command = strings.Split(phrase, " ")
@@ -118,12 +111,13 @@ func (c *JobController) parseIssueComment(
 
 	pr, err := c.GitHub.GetPullRequest(ctx, event.GetRepo(), event.GetIssue().GetNumber())
 	if err != nil {
-		return nil, nil, "", nil, errors.WithStack(err)
+		return nil, nil, "", "", nil, errors.WithStack(err)
 	}
 
 	repo = event.GetRepo()
 	ref = fmt.Sprintf("refs/heads/%s", pr.GetHead().GetRef())
-	return ctx, repo, ref, command, err
+	sha = pr.GetHead().GetSHA()
+	return ctx, repo, ref, sha, command, err
 }
 
 func isValidAction(action *string) bool {