From a7002c2931711800f0db209f568ad9cf7693a0d9 Mon Sep 17 00:00:00 2001
From: Aurelien Gateau <aurelien.gateau@gitguardian.com>
Date: Thu, 11 Jan 2024 17:09:44 +0100
Subject: [PATCH] fix(ci): fixup commit message checker failing on PR from
 forks

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

diff --git a/.github/workflows/test-lint.yml b/.github/workflows/test-lint.yml
index d480c22f..b5c8f4a1 100644
--- a/.github/workflows/test-lint.yml
+++ b/.github/workflows/test-lint.yml
@@ -59,7 +59,9 @@ jobs:
       - name: Check commit messages
         if: github.event_name == 'pull_request'
         run: |
-          if git log --format=%s "origin/$GITHUB_BASE_REF..origin/$GITHUB_HEAD_REF" | grep '^fixup!' ; then
+          PR_REF="${GITHUB_REF%/merge}/head"
+          git fetch origin "$PR_REF"
+          if git log --format=%s "origin/$GITHUB_BASE_REF..FETCH_HEAD" | grep '^fixup!' ; then
               echo 'Error: this pull request contains fixup commits. Squash them.'
               exit 1
           fi