Jujutsu: Keeping a file untracked

Coming from Git , I am used to a workflow where I can create a file in my repository (maybe a temporary script, or a local configuration file) and just never git add it. It sits there, listed as untracked in git status , invisible to my commits but available for my use. I never needed to add it to .gitignore since I simply never staged it. When I started using Jujutsu , I ran into a small friction…