diff --git a/.github/scripts/run_cpp_linter.py b/.github/scripts/run_cpp_linter.py
index 17c05381cf..0338a9f2bc 100644
--- a/.github/scripts/run_cpp_linter.py
+++ b/.github/scripts/run_cpp_linter.py
@@ -6,7 +6,7 @@
 token = os.environ['GITHUB_TOKEN']
 gh = Github(token)
 
-event_file_path = os.environ['GITHUB_EVENT_PATH']
+event_file_path = "/GITHUB_EVENT.json"
 with open(event_file_path, 'r') as f:
     j = f.read()
     event = json.load(j)
diff --git a/.github/scripts/run_py_linter.py b/.github/scripts/run_py_linter.py
index 14e768ceff..5a78a661e6 100644
--- a/.github/scripts/run_py_linter.py
+++ b/.github/scripts/run_py_linter.py
@@ -6,7 +6,7 @@
 token = os.environ['GITHUB_TOKEN']
 gh = Github(token)
 
-event_file_path = os.environ['GITHUB_EVENT_PATH']
+event_file_path = "/GITHUB_EVENT.json"
 with open(event_file_path, 'r') as f:
     j = f.read()
     event = json.load(j)
diff --git a/.github/workflows/linter.yml b/.github/workflows/linter.yml
index 281a77eb80..60d598b986 100644
--- a/.github/workflows/linter.yml
+++ b/.github/workflows/linter.yml
@@ -10,6 +10,8 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v2
+        with:
+          ref: ${{ github.event.pull_request.head.sha }}
       - name: Docker Login
         run: docker login docker.pkg.github.com -u $GITHUB_ACTOR -p $GITHUB_TOKEN
         env:
@@ -31,6 +33,8 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v2
+        with:
+          ref: ${{ github.event.pull_request.head.sha }}
       - name: Docker Login
         run: docker login docker.pkg.github.com -u $GITHUB_ACTOR -p $GITHUB_TOKEN
         env: