diff --git a/modules/gitea/README.md b/modules/gitea/README.md
index b6f90d2b..3031e848 100644
--- a/modules/gitea/README.md
+++ b/modules/gitea/README.md
@@ -19,6 +19,9 @@ Every new head of an open pull request is announced as `pull.updated`, once, and
   `unannounced`), which the controller keeps as a condition (ADR 0224), said again each pass while it lasts, and
   recovered when a check arrives or the pull request closes. What is said is kept in `pulls-unannounced.json`
   beside the announcer's record, so a restart recovers what it said.
+- **How to see it work.** A pull request opened more than a minute after its branch was pushed — this fix's own
+  was one, and the announcer it fixes never saw it — has `mesh/merge-gate` pending within a pass of the next sweep
+  at the latest, and `mesh-controller.conditions` names none for it.
 - **A pull request or issue number that is not one is refused** before the forge is asked: a tool called with a
   misnamed argument sent `pulls/NaN`.