This small patch is for the mods “Open Cities Skyrim” by Arthmoor and “Pit Fighter” by Orange Juice, for The Elder Scrolls V Skyrim. All it does is bring the entrance to the Pit Fighter HQ into the open worldspace and creates a fake entrance in the closed worldspace for the Civil War battle in Windhelm.
You can download the patch here;
Note: This has not been updated in a while. While the version of Pit Fighters is up to date, Open Cities Skyrim has been updated numerous times since this release. I’ll eventually get around to updating it, whenever I start playing Skyrim regularly again.