You have a couple of options:
Download the desired cumulative/monthly update from the Microsoft Update Catalog, and then deploy it using the BatchPatch deployment feature
OR
Use offline mode in BatchPatch (in your case you would probably want to go with scenario 3) to deploy the cumulative/monthly update from the previous month. In this case you would select the option "Tools > Settings > Windows Update > Do not download newest wsusscn2.cab file if any version is already cached."
You can take the desired month’s wsusscn2.cab file and put it in your BatchPatch cache folder, and then with that checkbox checked BatchPatch will use that specific wsusscn2.cab file without downloading the new/current one.