chore: add logging

packages/aft/lib/src/repo.dart

@@ -28,6 +28,8 @@ class Repo {
     AftConfig aftConfig, {
     AWSLogger? logger,
   }) async {
+    logger?.info('### root: ${aftConfig.rootDirectory.toFilePath()}');
+    logger?.info('### workingDirectory: ${aftConfig.workingDirectory}');
     final gitDir = await GitDir.fromExisting(
       aftConfig.rootDirectory.toFilePath(),
     );
@@ -71,6 +73,7 @@ class Repo {
   /// the base git reference for calculating changes relevant to this version
   /// bump.
   Future<String?> latestBumpRef(PackageInfo package) async {
+    logger.info('latestBumpRef');
     final packageName = package.name;
     final component = components[packageName]?.name ??
         components.values
@@ -90,10 +93,12 @@ class Repo {
           (commitMessage.updatedComponents.contains(component) ||
               commitMessage.updatedComponents.contains(packageName) ||
               commitMessage.updatedComponents.isEmpty)) {
+        logger.info('commitMessage.sha: ${commitMessage.sha}');
         return commitMessage.sha;
       }
       (sha, commit) = await git.commitRef(commit.parents.first);
     }
+    logger.info('commitMessage.sha: null');
     return null;
   }
 
@@ -151,6 +156,8 @@ class Repo {
   /// Collect all the packages which have changed between [baseRef]..[headRef]
   /// and the commits which changed them.
   Future<GitChanges> changes(String baseRef, String headRef) async {
+    logger.info('baseRef: $baseRef');
+    logger.info('headRef: $headRef');
     final baseTree = (await git.commitFromRevision(baseRef)).treeSha;
     final headTree = (await git.commitFromRevision(headRef)).treeSha;
     final diffMarker = (baseTree, headTree);