Mirror master and main, refs #849

.github/workflows/mirror-master-and-main.yml

@@ -0,0 +1,21 @@
+name: Mirror "master" and "main" branches
+on:
+  push:
+    branches:
+      - master
+      - main
+
+jobs:
+  mirror:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Mirror to "master"
+        uses: zofrex/mirror-branch@ea152f124954fa4eb26eea3fe0dbe313a3a08d94
+        with:
+          target-branch: master
+          force: false
+      - name: Mirror to "main"
+        uses: zofrex/mirror-branch@ea152f124954fa4eb26eea3fe0dbe313a3a08d94
+        with:
+          target-branch: main
+          force: false