From 6367bea02bb2e276cdbfbec6c5974c5832f68fac Mon Sep 17 00:00:00 2001
From: Joachim Breitner <mail@joachim-breitner.de>
Date: Wed, 20 Dec 2023 09:36:44 +0100
Subject: [PATCH] chore: pr-release: Also work with older tags

---
 .github/workflows/pr-release.yml | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/.github/workflows/pr-release.yml b/.github/workflows/pr-release.yml
index 8f37b9831a80..45f23992b0ac 100644
--- a/.github/workflows/pr-release.yml
+++ b/.github/workflows/pr-release.yml
@@ -86,7 +86,10 @@ jobs:
         id: most-recent-nightly-tag
         if: ${{ steps.workflow-info.outputs.pullRequestNumber != '' }}
         run: |
-          git ls-remote https://github.com/leanprover/lean4-nightly.git 'refs/tags/nightly-*' --sort version:refname |tail -n1| sed 's,.*refs/tags/nightly-,MOST_RECENT_NIGHTLY=,' >> $GITHUB_ENV
+          git -C lean4.git remote add nightly https://github.com/leanprover/lean4-nightly.git
+          git -C lean4.git fetch nightly '+refs/tags/nightly-*:refs/tags/nightly-*'
+          git -C lean4.git tag --merged "${{ steps.workflow-info.outputs.sourceHeadSha }}" --list "nightly-*" \
+            | sort -rV | head -n 1 | sed "s/^nightly-*/MOST_RECENT_NIGHTLY=/" | tee -a $GITHUB_ENV
 
       - name: 'Setup jq'
         if: ${{ steps.workflow-info.outputs.pullRequestNumber != '' }}
@@ -98,7 +101,7 @@ jobs:
         id: ready
         run: |
           echo "Most recent nightly: $MOST_RECENT_NIGHTLY"
-          NIGHTLY_SHA=$(git ls-remote https://github.com/leanprover/lean4-nightly.git "nightly-$MOST_RECENT_NIGHTLY"|cut -f1)
+          NIGHTLY_SHA=$(git -C lean4.git rev-parse "nightly-$MOST_RECENT_NIGHTLY^{commit}")
           echo "SHA of most recent nightly: $NIGHTLY_SHA"
           MERGE_BASE_SHA=$(git -C lean4.git merge-base origin/master "${{ steps.workflow-info.outputs.sourceHeadSha }}")
           echo "SHA of merge-base: $MERGE_BASE_SHA"