diff -r cbcbf63b6dbf -r 89556caf3c66 mercurial/debugcommands.py
--- a/mercurial/debugcommands.py	Thu May 25 00:23:05 2023 +0200
+++ b/mercurial/debugcommands.py	Wed May 31 16:04:16 2023 +0100
@@ -617,6 +617,10 @@
 
     Stream bundles are special bundles that are essentially archives of
     revlog files. They are commonly used for cloning very quickly.
+
+    This command creates a "version 1" stream clone, which is deprecated in
+    favor of newer versions of the stream protocol. Bundles using such newer
+     versions can be generated using the `hg bundle` command.
     """
     # TODO we may want to turn this into an abort when this functionality
     # is moved into `hg bundle`.