Mirrors:
http://tagged.snapshots.deb.tails.boum.org/7.7.3/debian
http://tagged.snapshots.deb.tails.boum.org/7.7.3/debian-security
http://tagged.snapshots.deb.tails.boum.org/7.7.3/torproject
Additional sources:
deb http://tagged.snapshots.deb.tails.boum.org/7.7.3/debian sid main contrib non-free non-free-firmware
deb http://deb.tails.boum.org/ 7.7.3 main contrib non-free
deb http://tagged.snapshots.deb.tails.boum.org/7.7.3/torproject trixie main
deb http://tagged.snapshots.deb.tails.boum.org/7.7.3/debian trixie-backports main contrib non-free non-free-firmware