diff --git a/doc/todo/debug_for___34__content_changed_while_it_was_being_sent/comment_1_bce631c26907d03314cfc2e94933cce9._comment b/doc/todo/debug_for___34__content_changed_while_it_was_being_sent/comment_1_bce631c26907d03314cfc2e94933cce9._comment
new file mode 100644
index 0000000000..67379855f8
--- /dev/null
+++ b/doc/todo/debug_for___34__content_changed_while_it_was_being_sent/comment_1_bce631c26907d03314cfc2e94933cce9._comment
@@ -0,0 +1,10 @@
+[[!comment format=mdwn
+ username="joey"
+ subject="""comment 1"""
+ date="2021-05-19T15:01:06Z"
+ content="""
+It's a change to the stat information. The only likely scenario would be if
+annex.hardlink is in use and the file is unlocked and gets modified.
+
+There's not much to debug, all it knows is the before and after stat.
+"""]]