The itch demo has too small a jump so I can't keep trying it though xD
The game seems to be running at an odd resolution, and then scaling to my monitor resolution. Parts look jagged and pixelated, and the popup menus (like the branch name dialog) are really small. I know it's not a Godot issue, I use the engine and have played many games created with it.
I love this game though, it's a great way to learn! I knew a lot of basic git, but this is teaching me all the other stuff I've just never used since I either didn't know it was that simple or that they even existed!