Package database maintenance utility which enables installation of said package via Pacman. More information: https://manned.org/repo-add.
repo-add path/to/database.db.tar.gz
repo-add --remove path/to/database.db.tar.gz *.pkg.tar.zst
repo-add --quiet path/to/database.db.tar.gz *.pkg.tar.zst
repo-add --nocolor path/to/database.db.tar.gz *.pkg.tar.zst