From 6c527547dcc5eb960a50909eed8635e58a41f880 Mon Sep 17 00:00:00 2001
From: link2xt <link2xt@testrun.org>
Date: Mon, 17 Nov 2025 10:16:31 +0000
Subject: [PATCH] ci(nix): checkout pull request HEAD instead of merge commit

<https://github.com/actions/checkout?tab=readme-ov-file#Checkout-pull-request-HEAD-commit-instead-of-merge-commit>
---
 .github/workflows/nix.yml | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/.github/workflows/nix.yml b/.github/workflows/nix.yml
index 8b8d5d0d8..5087e9025 100644
--- a/.github/workflows/nix.yml
+++ b/.github/workflows/nix.yml
@@ -25,6 +25,7 @@ jobs:
         with:
           show-progress: false
           persist-credentials: false
+          ref: ${{ github.event.pull_request.head.sha }}
       - uses: cachix/install-nix-action@fd24c48048070c1be9acd18c9d369a83f0fe94d7 # v31
       - run: nix fmt flake.nix -- --check
 
@@ -84,6 +85,7 @@ jobs:
         with:
           show-progress: false
           persist-credentials: false
+          ref: ${{ github.event.pull_request.head.sha }}
       - uses: cachix/install-nix-action@fd24c48048070c1be9acd18c9d369a83f0fe94d7 # v31
       - run: nix build .#${{ matrix.installable }}
 
@@ -105,5 +107,6 @@ jobs:
         with:
           show-progress: false
           persist-credentials: false
+          ref: ${{ github.event.pull_request.head.sha }}
       - uses: cachix/install-nix-action@fd24c48048070c1be9acd18c9d369a83f0fe94d7 # v31
       - run: nix build .#${{ matrix.installable }}