debian apt snapshot source issue

[AnndaGH]

docker run --rm -it --name test1 lcr.loongnix.cn/library/debian:sid-20250822-slim

apt update

Get:1 http://snapshot.debian.org/archive/debian-ports/20250822T015308Z sid InRelease [74.2 kB]
Get:2 http://snapshot.debian.org/archive/debian-ports/20250822T015308Z unreleased InRelease [50.0 kB]
Error: Release file for http://snapshot.debian.org/archive/debian-ports/20250822T015308Z/dists/sid/InRelease is expired (invalid since 4d 7h 0min 22s). Updates for this repository will not be applied.
Error: Release file for http://snapshot.debian.org/archive/debian-ports/20250822T015308Z/dists/unreleased/InRelease is expired (invalid since 4d 7h 0min 15s). Updates for this repository will not be applied.

[fqucuo]

Obviously: 'is expired', pull new image