Clone code to detect code changes for non-PR events (#4915)

.github/workflows/tests.yml

@@ -41,9 +41,9 @@ jobs:
       code: ${{ steps.filter.outputs.code }}
     steps:
       - uses: actions/checkout@v3
-        # dorny/paths-filter needs git clone for push events
+        # dorny/paths-filter needs git clone for non-PR events
         # https://github.com/marketplace/actions/paths-changes-filter#supported-workflows
-        if: github.event_name == 'push'
+        if: github.event_name != 'pull_request'
       - uses: dorny/paths-filter@4512585405083f25c027a35db413c2b3b9006d50
         id: filter
         with:
@@ -59,7 +59,7 @@ jobs:
   linux:
     # only run test suite if there are code changes
     needs: changes
-    if: needs.changes.outputs.code == 'true'
+    if: github.event_name == 'schedule' || needs.changes.outputs.code == 'true'
 
     runs-on: ubuntu-latest
     defaults:
@@ -167,7 +167,7 @@ jobs:
   windows:
     # only run test suite if there are code changes
     needs: changes
-    if: needs.changes.outputs.code == 'true'
+    if: github.event_name == 'schedule' || needs.changes.outputs.code == 'true'
 
     runs-on: windows-2019
     strategy:
@@ -276,7 +276,7 @@ jobs:
   macos:
     # only run test suite if there are code changes
     needs: changes
-    if: needs.changes.outputs.code == 'true'
+    if: github.event_name == 'schedule' || needs.changes.outputs.code == 'true'
 
     runs-on: macos-11
     defaults:
@@ -385,7 +385,7 @@ jobs:
   aggregate:
     # only aggregate test suite if there are code changes
     needs: [changes, linux, windows, macos]
-    if: always() && needs.changes.outputs.code == 'true'
+    if: always() && (github.event_name == 'schedule' || needs.changes.outputs.code == 'true')
 
     runs-on: ubuntu-latest
     steps: