diff --git a/pymods/irods_utils/irods_utils.py b/pymods/irods_utils/irods_utils.py
index 429282286246a9b340347b9d39cce463ff6509a6..30e3cfb12b5058ffa1142cd26f5e0dccc340df7c 100644
--- a/pymods/irods_utils/irods_utils.py
+++ b/pymods/irods_utils/irods_utils.py
@@ -394,6 +394,8 @@ def confirmed_put( irods_sesh, file_pathname, new_obj_ipath, metadata_dict=None,
                      + " tmp ipath: "     + new_obj_ipath_tmp )
         return None
 
+    # Example here: https://github.com/irods/python-irodsclient/blob/main/irods/test/helpers.py#L251
+    # ... in function: def compute_sha256_digest(file_path):
     b64_digest256 = base64.b64encode(hash_digest256).decode()
     new_obj_hash_256 = "sha2:{}".format(b64_digest256)