expose tracker option in cli

corrlib/cli.py

@@ -153,11 +153,16 @@ def init(
         "--dataset",
         "-d",
         ),
+    tracker: str = typer.Option(
+        str('datalad'),
+        "--tracker",
+        "-t",
+        ),
     ) -> None:
     """
     Initialize a new backlog-database.
     """
-    create(path)
+    create(path, tracker)
     return