diff --git a/.github/workflows/parity_nightly.yml b/.github/workflows/parity_nightly.yml
index 79f5c9b514..e7fbe9632c 100644
--- a/.github/workflows/parity_nightly.yml
+++ b/.github/workflows/parity_nightly.yml
@@ -10,6 +10,9 @@
 name: Parity Nightly
 
 on:
+  # TEMPORARY: pre-merge test runs; drop this commit before the PR
+  push:
+    branches: ["hanif/parity-nightly"]
   schedule:
     # build_all.yml starts at 17:00 UTC and has finished by ~20:00
     - cron: "0 21 * * *"
@@ -76,7 +79,7 @@ jobs:
         uses: actions/checkout@v7
         with:
           repository: OrcaSlicer/orca-test-repo
-          ref: ${{ inputs.test_repo_ref || 'main' }}
+          ref: ${{ inputs.test_repo_ref || 'hanif/parity-harness' }}
           path: orca-test-repo
 
       # The AppImage ships only packed preset caches, so profiles and the CLI