deb hhttp://cdn-fastly.deb.debian.org/debian buster main contrib non-free
deb hhttp://cdn-fastly.deb.debian.org/debian buster-updates main contrib non-free
deb http://cdn-fastly.deb.debian.org/debian/ buster-backports main contrib non-free
deb http://cdn-fastly.deb.debian.org/debian/ buster-proposed-updates main contrib non-free
deb http://cdn-fastly.deb.debian.org/debian-security buster/updates main contrib non-free