diff --git a/.github/workflows/monorepo_tests.yaml b/.github/workflows/monorepo_tests.yaml
index ac3eb189..54646a93 100644
--- a/.github/workflows/monorepo_tests.yaml
+++ b/.github/workflows/monorepo_tests.yaml
@@ -15,7 +15,8 @@ jobs:
     steps:
       - uses: actions/checkout@v4
         with:
-          fetch-depth: 2
+          filter: tree:0
+          fetch-depth: 0
 
       - id: fetch-latest-main
         run: git fetch --depth=1 origin main:main
@@ -36,7 +37,8 @@ jobs:
     steps:
       - uses: actions/checkout@v4
         with:
-          fetch-depth: 1
+          filter: tree:0
+          fetch-depth: 0
 
       - name: update pip
         run: python -m pip install --upgrade pip
diff --git a/scripts/affected_services.py b/scripts/affected_services.py
index 1384778b..3c0716ad 100755
--- a/scripts/affected_services.py
+++ b/scripts/affected_services.py
@@ -70,7 +70,7 @@ def files_in_diff(full: bool, target: str) -> list[str]:
     """List files in diff."""
     # Command to list names of changed files
     change_range = f"{target}...HEAD" if full else "HEAD^1..HEAD"
-    command = f"git diff --merge-base --name-only {change_range}"
+    command = f"git diff --name-only {change_range}"
 
     # Execute the command and capture the output
     result = subprocess.run(