From 27dcf6ac1bd1a82ef55f12ceb40862dda4821de0 Mon Sep 17 00:00:00 2001
From: Zijian Zhang <35801754+futrime@users.noreply.github.com>
Date: Tue, 13 Oct 2026 11:05:19 +0800
Subject: [PATCH] ci: find the release pull request by its branch to run CI on,
 never on main

release.yml looked it up by its `autorelease: pending` label, which release-please had not
yet added for 0.2.0-beta.2: the lookup came back empty and CI was dispatched on main, leaving
the release pull request without `ci-ok`.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
---
 .github/workflows/release.yml | 12 +++++++++---
 1 file changed, 9 insertions(+), 3 deletions(-)

diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 9ac2ae31..eb218a01 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -129,12 +129,18 @@ jobs:
           node release-pr.js
 
       # A pull request this workflow's token opens or updates starts no `ci-ok` of its own, and
-      # the branch rule needs one. A dispatch is the one event that token may start.
+      # the branch rule needs one. A dispatch is the one event that token may start. The pull
+      # request is found by release-please's branch, not its `autorelease: pending` label, which
+      # it may not have yet; and never dispatched without one, which would run CI on `main`.
       - name: Run CI on the release pull request
         env:
           GH_TOKEN: ${{ github.token }}
           BRANCH: ${{ steps.plan.outputs.branch }}
         run: |
-          head="$(gh pr list --repo "$GITHUB_REPOSITORY" --base "$BRANCH" --label 'autorelease: pending' \
-            --json headRefName --jq '.[0].headRefName')"
+          head="$(gh pr list --repo "$GITHUB_REPOSITORY" --base "$BRANCH" --state open \
+            --json headRefName --jq '[.[].headRefName | select(startswith("release-please--"))][0] // ""')"
+          if [[ -z "$head" ]]; then
+            echo "::error::No release pull request is open against $BRANCH."
+            exit 1
+          fi
           gh workflow run ci.yml --ref "$head" --repo "$GITHUB_REPOSITORY"