# deb http://snapshot.debian.org/archive/debian/20201209T232235Z stretch main
deb http://archive.debian.org/debian stretch main
# deb http://snapshot.debian.org/archive/debian-security/20201209T232235Z stretch/updates main
deb http://archive.debian.org/debian-security stretch/updates main
# deb http://snapshot.debian.org/archive/debian/20201209T232235Z stretch-updates main
deb http://archive.debian.org/debian stretch-updates main