deb http://raspbian.raspberrypi.org/raspbian/ bullseye main contrib non-free rpi
deb http://archive.raspberrypi.org/debian/ bullseye main
Currently raspbmirror.py only mirrors the first one and so doesn't create full mirror - http://archive.raspberrypi.org/debian should also be included to create full mirror.
You can mirror http://archive.raspberrypi.org over rsync apt-repo.raspberrypi.org::archive, but only with a ipv6 connection.
Because the rsync host apt-repo.raspberrypi.org have only a ipv6 address
Raspberry Pi OS uses two sources by default:
Currently
raspbmirror.py
only mirrors the first one and so doesn't create full mirror -http://archive.raspberrypi.org/debian
should also be included to create full mirror.