diff --git a/swh/deposit/models.py b/swh/deposit/models.py
--- a/swh/deposit/models.py
+++ b/swh/deposit/models.py
@@ -161,19 +161,19 @@
         return "%s/%s" % (self.client.provider_url.rstrip("/"), self.external_id)
 
 
-def client_directory_path(instance, filename):
-    """Callable to upload archive in MEDIA_ROOT/user_<id>/<filename>
+def client_directory_path(instance: "DepositRequest", filename: str) -> str:
+    """Callable to determine the upload archive path. This defaults to
+     MEDIA_ROOT/client_<user_id>/%Y%m%d-%H%M%S/<filename>.
 
     Args:
-        instance (DepositRequest): DepositRequest concerned by the upload
-        filename (str): Filename of the uploaded file
+        instance: DepositRequest concerned by the upload
+        filename: Filename of the uploaded file
 
     Returns:
-        A path to be prefixed by the MEDIA_ROOT to access physically
-        to the file uploaded.
+        The upload archive path.
 
     """
-    return "client_{0}/{1}".format(instance.deposit.client.id, filename)
+    return "client_{0}/%Y%m%d-%H%M%S/{1}".format(instance.deposit.client.id, filename)
 
 
 REQUEST_TYPES = [(ARCHIVE_TYPE, ARCHIVE_TYPE), (METADATA_TYPE, METADATA_TYPE)]