Download just the theme file directly to your ghostty config folder directly
or clone the repository:
git clone https://github.com/stevebosworth/hardhacker-ghostty.git
Import the theme file 'hardhacker' to ~/.config/ghostty/themes/:
cp -r hardhacker ~/.config/ghostty/themes/
Add the following line to your ~/.config/ghostty/config:
theme = hardhacker