bazlets: note down version origin

Change-Id: I3fcead7676ec41ae9905c29098f36737668cf475
Reviewed-on: https://gerrit.hackerspace.pl/c/hscloud/+/1693
Reviewed-by: implr <implr@hackerspace.pl>
diff --git a/WORKSPACE b/WORKSPACE
index 826c28d..974c4aa 100644
--- a/WORKSPACE
+++ b/WORKSPACE
@@ -215,6 +215,7 @@
 
 git_repository(
     name = "com_googlesource_gerrit_bazlets",
+    # master on 2023/10/09
     commit = "e68cc7a45d9ee2b100024b9b12533b50a4598585",
     remote = "https://gerrit.googlesource.com/bazlets",
     shallow_since = "1606931369 -0600",