improve comments

Author: dbogunowicz

src/sparsezoo/model/model.py

@@ -745,7 +745,7 @@ def _get_directory_from_loose_api_files(
             for file_dict in files
             if file_dict["display_name"] == display_name
         ]
-        # fetch all the loose file that belong to the directory, if display name
+        # fetch all the loose file that belong to the untared directory, if display name
         # is tarball (ends with .tar.gz)
         files_potentially_extracted = [
             file_dict
@@ -757,6 +757,8 @@ def _get_directory_from_loose_api_files(
         path_extracted_directory = os.path.join(
             parent_directory, display_name.replace(".tar.gz", "")
         )
+        # check if the directory has been extracted and
+        # if so, use the extracted files to create the directory
         is_directory_extracted = os.path.isdir(path_extracted_directory)
 
         files = (