it too deep affects the performance on the unpacker
side, because delta data needs to be applied that many
times to get to the necessary object.
- The default value for --window is 10 and --depth is 50.
++
+The default value for --window is 10 and --depth is 50. The maximum
+depth is 4095.
--window-memory=<n>::
This option provides an additional limit on top of `--window`;