Updated git clone URL
diff --git a/examples/cpp/helloworld/README.md b/examples/cpp/helloworld/README.md
index 04283ea..db953f5 100644
--- a/examples/cpp/helloworld/README.md
+++ b/examples/cpp/helloworld/README.md
@@ -12,7 +12,7 @@
 
 
 ```sh
-$ git clone https://github.com/grpc/grpc.git
+$ git clone -b $(curl -L http://grpc.io/release) https://github.com/grpc/grpc
 ```
 
 Change your current directory to examples/cpp/helloworld