You're joking of course, but that likely won't do anything useful.

If it's tracked, then ignore has no effect. If it's not tracked, then you might as well use .git/info/excludes which is pretty much the same thing but not tracked, or you can use a global excludes file, like ~/.gitignore is common (you have to configure git to point at it, iirc).

It _could_ make sense to ignore the .gitignore if some other tool is parsing and using that file, but that pattern is...troublesome so I hope not.