chore: try fetching blobs

Author: diegomarquezp

hermetic_build/common/model/config_change.py

@@ -106,8 +106,10 @@ def get_qualified_commits(
         :return: QualifiedCommit objects.
         """
         with tempfile.TemporaryDirectory(ignore_cleanup_errors=True) as tmp_dir:
-            # we only need commit history, thus a shadow clone is enough.
-            repo = Repo.clone_from(url=repo_url, to_path=tmp_dir, filter=["blob:none"])
+            # We include blobs to avoid unexpected missing git objects when computing
+            # a diff.
+            # See https://github.com/googleapis/sdk-platform-java/issues/3745
+            repo = Repo.clone_from(url=repo_url, to_path=tmp_dir)
             commit = repo.commit(self.current_config.googleapis_commitish)
             proto_paths = self.current_config.get_proto_path_to_library_name()
             qualified_commits = []