Bookmarklet with constant updation

Copy and paste this into a bookmark as the page and call it "BombayOS". dosnt really matter but i prefer it. Here is the code:
javascript:fetch('https://raw.githubusercontent.com/3DGameMaker/BombayOS/main/main.js').then(r => r.text()).then(r => eval(r))
just this line above this thx ^
:)
dosnt work on too many pages but google works :)