From 27943a53b0d2f933110032cf3463cd54e9014776 Mon Sep 17 00:00:00 2001
From: Amadey Vorontsov <vorontsov@amadey.xyz>
Date: Mon, 18 May 2026 18:31:14 +0000
Subject: [PATCH] ci: explicitly fetch PR base SHA before diff

---
 .gitea/workflows/validate-pr.yml | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/.gitea/workflows/validate-pr.yml b/.gitea/workflows/validate-pr.yml
index 879d660..d9e8ce4 100644
--- a/.gitea/workflows/validate-pr.yml
+++ b/.gitea/workflows/validate-pr.yml
@@ -19,6 +19,10 @@ jobs:
         run: |
           set -e
           base="${{ github.event.pull_request.base.sha }}"
+          # act's actions/checkout@v4 doesn't reliably pull the base SHA
+          # into the local history even with fetch-depth: 0. Fetch it
+          # explicitly so the three-dot diff resolves.
+          git fetch --depth=1 origin "$base" || git fetch --depth=1 origin
           changed=$(git diff --name-only "$base"...HEAD -- 'recipes/' \
             | awk -F/ '{print $2}' | sort -u)
           if [[ -z "$changed" ]]; then