From 12352ff83c0f1e4552138753175615fdccbd9b0e Mon Sep 17 00:00:00 2001
From: MarcoIeni <11428655+MarcoIeni@users.noreply.github.com>
Date: Fri, 3 Apr 2026 12:15:33 +0200
Subject: [PATCH] validate merge queue branch pattern

---
 src/validate.rs | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/src/validate.rs b/src/validate.rs
index 6f8690c45..7233e3ab1 100644
--- a/src/validate.rs
+++ b/src/validate.rs
@@ -1213,6 +1213,14 @@ but that team is not mentioned in [access.teams]"#,
                 );
             }
 
+            if protection.merge_queue.enabled && protection.pattern.contains('*') {
+                bail!(
+                    r#"repo '{}' uses a GitHub rule for {} that enables `merge-queue`, but GitHub merge queues only support exact ref names patterns"#,
+                    repo.name,
+                    protection.pattern,
+                );
+            }
+
             let managed_by_bors = protection
                 .allowed_merge_apps
                 .contains(&AllowedMergeApp::Bors);