From 5108ccdcf5bdbff904957ed0012ea30b1cd739b2 Mon Sep 17 00:00:00 2001
From: Yakun Xu <xyk@google.com>
Date: Thu, 17 Jul 2025 01:07:24 +0800
Subject: [PATCH] [size-report] correct the checkout ref (#11732)

The commit corrects the checkout ref to pull/<number>/merge, which is
the ref after merging and should be used for size checking.
---
 .github/workflows/size.yml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/.github/workflows/size.yml b/.github/workflows/size.yml
index 090efd8ee..6df8365d6 100644
--- a/.github/workflows/size.yml
+++ b/.github/workflows/size.yml
@@ -56,7 +56,7 @@ jobs:
     - name: Checkout Pull Request
       if: ${{ github.event_name == 'pull_request_target' }}
       run: |
-        git fetch origin pull/${{ github.event.pull_request.number }}/head
+        git fetch origin pull/${{ github.event.pull_request.number }}/merge
         git checkout FETCH_HEAD
     - name: Run
       env: