如果 Debian 系统执行apt update时出现：
E: Repository 'http://security.debian.org/debian-security buster/updates InRelease' changed its 'Suite' value from 'stable' to 'oldstable' N: This must be accepted explicitly before updates for this repository can be applied. See apt-secure(8) manpage for details. N: Repository 'http://deb.debian.org/debian buster InRelease' changed its 'Version' value from '10.1' to '10.10' E: Repository 'http://deb.debian.org/debian buster InRelease' changed its 'Suite' value from 'stable' to 'oldstable' N: This must be accepted explicitly before updates for this repository can be applied. See apt-secure(8) manpage for details. E: Repository 'http://deb.debian.org/debian buster-updates InRelease' changed its 'Suite' value from 'stable-updates' to 'oldstable-updates' N: This must be accepted explicitly before updates for this repository can be applied. See apt-secure(8) manpage for details.
输入以下命令，然后重新执行 apt update就可以了：
apt-get update --allow-releaseinfo-change