not main

.github/workflows/build-pullrequest.yml

@@ -3,7 +3,7 @@ name: Build pull-request
 on:
   pull_request:
     branches:
-      - main
+      - master
     # Review gh actions docs if you want to further define triggers, paths, etc
     # https://docs.github.com/en/actions/using-workflows/workflow-syntax-for-github-actions#on