From 4a7673ddf2377784c1c7f11edcfa3ddb54e702a0 Mon Sep 17 00:00:00 2001
From: Aiden Grossman <aidengrossman@google.com>
Date: Tue, 17 Dec 2024 06:47:15 +0000
Subject: [PATCH] [Github] Fix premerge concurrency cancellation

This should actually fix the problem as I validated that github.sha returns an
actual value by running a workflow in a test repo. I'm not sure why the
existing value doesn't work, but it returns nothing.
---
 .github/workflows/premerge.yaml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/.github/workflows/premerge.yaml b/.github/workflows/premerge.yaml
index d002e6504701..7a9762812cc1 100644
--- a/.github/workflows/premerge.yaml
+++ b/.github/workflows/premerge.yaml
@@ -16,7 +16,7 @@ jobs:
     if: github.repository_owner == 'llvm'
     runs-on: llvm-premerge-linux-runners
     concurrency:
-      group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.event.push.head }}
+      group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.sha }}
       cancel-in-progress: true
     container:
       image: ghcr.io/llvm/ci-ubuntu-22.04:latest