From f0dd4a8229f8b0e667ead720248f3b0f26a2069a Mon Sep 17 00:00:00 2001
From: Kevin Longe <273747162+kvlonge@users.noreply.github.com>
Date: Sat, 26 Sep 2026 04:42:35 +0100
Subject: [PATCH] ci: compare pull requests with their merge base when
 selecting suites

---
 .github/workflows/verify.yml | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/.github/workflows/verify.yml b/.github/workflows/verify.yml
index a6a078e3e1..2a89fc19ee 100644
--- a/.github/workflows/verify.yml
+++ b/.github/workflows/verify.yml
@@ -109,7 +109,9 @@ jobs:
                 broad=true
                 ;;
             esac
-          done < <(git diff --name-only -z "${BASE_SHA}" "${HEAD_SHA}")
+          # Three dots: compare with the merge base, so changes that landed on main after the branch
+          # started are not counted as this pull request's changes.
+          done < <(git diff --name-only -z "${BASE_SHA}...${HEAD_SHA}")
 
           if [[ "${changed}" != "true" ]]; then
             write_scope true true true true true true