Go to 'Mods' in the Main Menu. Select the mod you want to hide. Enable the 'Hide Mod' checkbox in the bottom left corner. Repeat for all mods you want to hide. Go into Singleplayer and run '/modspoof' ...
Copy the template by using GitHub's "Use this template" feature or by downloading the repo. Remove the "LICENSE-TEMPLATE" file and choose a new license. Refactor the example values in this template to ...