try fetching trunk explicitly

Author: Vicente Canales

.github/workflows/add-strict-types.yml

@@ -21,7 +21,7 @@ jobs:
       - name: Check for new PHP files
         id: check
         run: |
-          git fetch origin trunk
+          git fetch origin trunk:trunk
           NEW_PHP_FILES=$(git diff --name-only origin/trunk...HEAD -- '*.php' | xargs grep -LE 'declare\( strict_types=1\ )')
           if [ -n "$NEW_PHP_FILES" ]; then
             echo "::set-output name=strict_types_needed::true"
@@ -33,7 +33,7 @@ jobs:
       - name: Add strict types to new PHP files
         if: steps.check.outputs.strict_types_needed == 'true'
         run: |
-          git fetch origin trunk
+          git fetch origin trunk:trunk
           for file in $(git diff --name-only origin/trunk...HEAD -- '*.php' | xargs grep -LE 'declare\( strict_types=1\ )'); do
             sed -i '1s/^/<?php declare( strict_types=1 );\n/' "$file"
             git add "$file"