These files go into ~/.config/PrusaSlicer/ with the same folder structure.
After cloning, you can do:
ln 'physical_printer/Drucker Brudi.ini' '~/.config/PrusaSlicer/physical_printer/Drucker Brudi.ini'
ln 'printer/Drucker Brudi.ini' '~/.config/PrusaSlicer/printer/Drucker Brudi.ini'
ln 'print/Drucker Brudi.ini' '~/.config/PrusaSlicer/print/Drucker Brudi.ini'
Made with PrusaSlicer 2.5.2