From b6d8f550d4acec329abf48f732fec2e7f4348a72 Mon Sep 17 00:00:00 2001
From: Bruno Devic <bruno.devic@parity.io>
Date: Mon, 13 Apr 2026 08:42:25 +0200
Subject: [PATCH] Add optional concurrency_suffix input to
 check-synchronization

When multiple callers invoke check-synchronization in parallel within
the same workflow run, they all resolve to the same concurrency group
and GitHub randomly cancels the competing jobs.

Adding an optional concurrency_suffix input lets callers provide a
unique value so their concurrency groups don't collide.
---
 .github/workflows/check-synchronization.yml | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/.github/workflows/check-synchronization.yml b/.github/workflows/check-synchronization.yml
index b1f12bd..a5e6482 100644
--- a/.github/workflows/check-synchronization.yml
+++ b/.github/workflows/check-synchronization.yml
@@ -18,6 +18,10 @@ on:
         required: false
         type: string
         default: master
+      concurrency_suffix: # optional suffix to make the concurrency group unique per caller
+        required: false
+        type: string
+        default: ''
     secrets:
       upstream_reader_app_key:
         required: false
@@ -31,7 +35,7 @@ on:
         value: ${{ jobs.job_check_branches_sync.outputs.refs_synced }}
 
 concurrency:
-  group: ${{ github.repository }}-${{ github.workflow }}-${{ github.ref }}
+  group: ${{ github.repository }}-${{ github.workflow }}-${{ github.ref }}${{ inputs.concurrency_suffix && format('-{0}', inputs.concurrency_suffix) || '' }}
 
 jobs:
   job_check_env_context: