No – patching does not change the original license. You must still comply with the base font’s terms. Most patched fonts inherit the original license (e.g., OFL).
Before patching, download the original from: protonema regular font free download patched
Yes — but with conditions. Protonema Regular is typically released under an open source license (e.g., SIL Open Font License 1.1 or similar). This means: No – patching does not change the original license
Open a terminal and run:
git clone https://github.com/ryanoasis/nerd-fonts.git
cd nerd-fonts