From 88f03af5944f11540eb00c4dcd6d666fac0d061c Mon Sep 17 00:00:00 2001
From: Neil <4138956+nwparker@users.noreply.github.com>
Date: Tue, 14 Apr 2026 15:17:25 -0700
Subject: [PATCH] Skip duplicate RC retries within same PT hour

---
 .github/workflows/release-rc.yml | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

diff --git a/.github/workflows/release-rc.yml b/.github/workflows/release-rc.yml
index a9c224d40..99b602743 100644
--- a/.github/workflows/release-rc.yml
+++ b/.github/workflows/release-rc.yml
@@ -65,6 +65,22 @@ jobs:
             exit 0
           fi
 
+          # Why: the first scheduled run today used the earlier workflow before
+          # slot markers existed. Keep a tag-time fallback so retries in the
+          # same PT hour still skip if an RC tag was already created.
+          latest_rc_tag="$(git for-each-ref --sort=-creatordate --format='%(refname:short) %(creatordate:iso-strict)' 'refs/tags/v*-rc.*' | head -n 1)"
+          if [[ -n "$latest_rc_tag" ]]; then
+            latest_rc_tag_name="${latest_rc_tag%% *}"
+            latest_rc_tag_date="${latest_rc_tag#* }"
+            latest_rc_slot="$(TZ=America/Los_Angeles date -d "$latest_rc_tag_date" '+%Y-%m-%d-%H')"
+
+            if [[ "$latest_rc_slot" == "${{ steps.slot.outputs.value }}" ]]; then
+              echo "already_ran=true" >>"$GITHUB_OUTPUT"
+              echo "reason=latest_rc_tag:$latest_rc_tag_name" >>"$GITHUB_OUTPUT"
+              exit 0
+            fi
+          fi
+
           echo "already_ran=false" >>"$GITHUB_OUTPUT"
 
       - name: Dry run summary
@@ -73,6 +89,7 @@ jobs:
           echo "Dry run only."
           echo "Current PT slot: ${{ steps.slot.outputs.value }}"
           echo "Already ran this slot: ${{ steps.existing.outputs.already_ran }}"
+          echo "Reason: ${{ steps.existing.outputs.reason }}"
 
       - name: Create and push RC tag
         if: steps.existing.outputs.already_ran != 'true' && !(github.event_name == 'workflow_dispatch' && inputs.dry_run)