From b3b282caaa5bb61737dc82526110b8c5e9e33950 Mon Sep 17 00:00:00 2001
From: Matt Pryor <matt@stackhpc.com>
Date: Tue, 27 Jun 2023 14:30:05 +0100
Subject: [PATCH] github.head_ref only exists in pull requests

---
 .github/workflows/main.yaml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/.github/workflows/main.yaml b/.github/workflows/main.yaml
index 627c7eb..8aa4ae9 100644
--- a/.github/workflows/main.yaml
+++ b/.github/workflows/main.yaml
@@ -5,7 +5,7 @@ on:
       - main
 
 concurrency:
-  group: ${{ github.head_ref }}
+  group: main
   cancel-in-progress: true
 
 jobs: