diff --git a/swh/loader/git/tests/test_from_disk.py b/swh/loader/git/tests/test_from_disk.py
--- a/swh/loader/git/tests/test_from_disk.py
+++ b/swh/loader/git/tests/test_from_disk.py
@@ -27,7 +27,7 @@
 SNAPSHOT_ID = "a23699280a82a043f8c0994cf1631b568f716f95"
 
 SNAPSHOT1 = {
-    "id": SNAPSHOT_ID,
+    "id": hash_to_bytes(SNAPSHOT_ID),
     "branches": {
         b"HEAD": {"target": b"refs/heads/master", "target_type": "alias",},
         b"refs/heads/master": {