diff --git a/stack.sh b/stack.sh
index c7c2e80..85b7474 100755
--- a/stack.sh
+++ b/stack.sh
@@ -144,6 +144,7 @@
         sudo chown `whoami` $2
         git clone $1 $2
         cd $2
+        # This checkout syntax works for both branches and tags
         git checkout $3
     fi
 }