diff --git a/pr-review/main.go b/pr-review/main.go
index 9b74191..3b03f78 100644
--- a/pr-review/main.go
+++ b/pr-review/main.go
@@ -39,8 +39,8 @@ PullRequest: %s#%d`, req.Repository.Name, GitAuthor, req.Repository.Name, req.Pu
 
 	h.GitExec("", "clone", "--depth", "1", prjGit.SSHURL, common.DefaultGitPrj)
 	h.GitExec(common.DefaultGitPrj, "checkout", "-B", branchName, prjGit.DefaultBranch)
-	h.GitExec(common.DefaultGitPrj, "submodule", "update", "--checkout", "--depth", "1", req.Repository.Name)
-	h.GitExec(path.Join(common.DefaultGitPrj, req.Repository.Name), "fetch", "--depth", "1", req.Pull_Request.Head.Sha)
+	h.GitExec(common.DefaultGitPrj, "submodule", "update", "--init", "--checkout", "--depth", "1", req.Repository.Name)
+	h.GitExec(path.Join(common.DefaultGitPrj, req.Repository.Name), "fetch", "--depth", "1", "origin", req.Pull_Request.Head.Sha)
 	h.GitExec(path.Join(common.DefaultGitPrj, req.Repository.Name), "checkout", req.Pull_Request.Head.Sha)
 	h.GitExec(common.DefaultGitPrj, "commit", "-a", "-m", commitMsg)
 	h.GitExec(common.DefaultGitPrj, "push", branchName)