git diff origin/${GITHUB_REF##*/} origin/${GITHUB_HEAD_REF}

Author: cclauss

.github/workflows/macOS-tests.yml

@@ -34,8 +34,6 @@ jobs:
       cancel-in-progress: false
     steps:
       - uses: actions/checkout@v3
-        with:
-          fetch-depth: 2  # Enable `git diff` in GitHub Actions
       - name: Discover typos
         run: |
           pip3 install --upgrade pip
@@ -46,7 +44,7 @@ jobs:
           # 1. Make automated fixes that are possible
           # 2. git diff to see what automated fixes were made
           # 3. See https://github.com/realm/SwiftLint#xcode explains why the double run
-          swiftlint --fix && git diff && swiftlint
+          swiftlint --fix && git diff origin/${GITHUB_REF##*/} origin/${GITHUB_HEAD_REF} && swiftlint
       - name: Resolve dependencies
         run: swift package resolve
       - name: Build