diff --git a/.github/workflows/pr_commits.yml b/.github/workflows/pr_commits.yml
index b088e19..b9e4a46 100644
--- a/.github/workflows/pr_commits.yml
+++ b/.github/workflows/pr_commits.yml
@@ -8,10 +8,14 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v3
+        with:
+          fetch-depth: 0
+          ref: ${{ github.head_ref }}
+
       - uses: dart-lang/setup-dart@v1.3
 
       - name: Get Dependencies
         run: dart pub get
 
       - name: Validate PR Commits
-        run: dart run commitlint_cli --from="${{ github.base_ref }}" --to="${{ github.head_ref }}" --config lib/commitlint.yaml
\ No newline at end of file
+        run: VERBOSE=true dart run commitlint_cli --from="${{ github.base_ref }}" --to="${{ github.head_ref }}" --config lib/commitlint.yaml
\ No newline at end of file
diff --git a/lib/src/read.dart b/lib/src/read.dart
index 8301638..790d78b 100644
--- a/lib/src/read.dart
+++ b/lib/src/read.dart
@@ -1,5 +1,8 @@
 import 'dart:io';
 import 'package:path/path.dart';
+import 'package:verbose/verbose.dart';
+
+final verbose = Verbose('commitlint:read');
 
 /// Read commit messages in given range([from], [to]),
 ///  or in [edit] file.
@@ -11,6 +14,7 @@ Future<Iterable<String>> read({
   String? workingDirectory,
   Iterable<String>? gitLogArgs,
 }) async {
+  verbose('from = $from, to = $to, edit = $edit');
   if (edit != null) {
     return await _getEditingCommit(
         edit: edit, workingDirectory: workingDirectory);
@@ -26,11 +30,14 @@ Future<Iterable<String>> _getRangeCommits({
   required Iterable<String> gitLogArgs,
   String? workingDirectory,
 }) async {
+  verbose('git log ${gitLogArgs.join(' ')}');
   final result = await Process.run(
     'git',
     ['log', ...gitLogArgs],
     workingDirectory: workingDirectory,
   );
+  verbose('stdout = ${result.stdout}');
+  verbose('stderr = ${result.stderr}');
   return ((result.stdout as String).trim().split('\n'))
       .where((message) => message.trim().isNotEmpty)
       .toList();
@@ -40,11 +47,14 @@ Future<Iterable<String>> _getEditingCommit({
   required String edit,
   String? workingDirectory,
 }) async {
+  verbose('git rev-parse --show-toplevel');
   final result = await Process.run(
     'git',
     ['rev-parse', '--show-toplevel'],
     workingDirectory: workingDirectory,
   );
+  verbose('stdout = ${result.stdout}');
+  verbose('stderr = ${result.stderr}');
   final root = result.stdout.toString().trim();
   final file = File(join(root, edit));
   if (await file.exists()) {