sudo apt update 実行時に奇妙なアイテムを受け取る

以下は私のものですsources.list。私のファイルには他のファイルはありません/etc/apt/sources.list.d/。(Some_Server)パブリックストアです。

$ cat /etc/apt/sources.list
deb (Some_Server)/debian-security/ bookworm-security main contrib non-free non-free-firmware
deb-src (Some_Server)/debian-security/ bookworm-security main contrib non-free non-free-firmware
deb (Some_Server)/debian/ bookworm-updates main contrib non-free non-free-firmware
deb-src (Some_Server)/debian/ bookworm-updates main contrib non-free non-free-firmware
deb (Some_Server)/debian/ bookworm main contrib non-free non-free-firmware
deb-src (Some_Server)/debian/ bookworm main contrib non-free non-free-firmware

ルーチンを進めましたが、sudo apt update異常なアイテム数にショックを受けました。

$ sudo apt update
Hit:1 (Some_Server)/debian-security bookworm-security InRelease
Get:2 (Some_Server)/debian bookworm-updates InRelease [52.1 kB]
Hit:3 (Some_Server)/debian bookworm InRelease                            
Get:4 (Some_Server)/debian bookworm-updates/main Sources.diff/Index [3,873 B]            
Get:5 (Some_Server)/debian bookworm-updates/main amd64 Packages.diff/Index [3,873 B]     
Get:6 (Some_Server)/debian bookworm-updates/main Translation-en.diff/Index [3,873 B]     
Get:7 (Some_Server)/debian bookworm-updates/main all Contents (deb).diff/Index [3,873 B]
Get:8 (Some_Server)/debian bookworm-updates/main Sources T-2023-08-26-0938.45-F-2023-08-26-0938.45.pdiff [539 B]
Get:9 (Some_Server)/debian bookworm-updates/main amd64 Packages T-2023-08-26-0938.45-F-2023-08-26-0938.45.pdiff [453 B]
Get:10 (Some_Server)/debian bookworm-updates/main Translation-en T-2023-08-26-0938.45-F-2023-08-26-0938.45.pdiff [199 B]
Get:8 (Some_Server)/debian bookworm-updates/main Sources T-2023-08-26-0938.45-F-2023-08-26-0938.45.pdiff [539 B]
Get:10 (Some_Server)/debian bookworm-updates/main Translation-en T-2023-08-26-0938.45-F-2023-08-26-0938.45.pdiff [199 B]
Get:9 (Some_Server)/debian bookworm-updates/main amd64 Packages T-2023-08-26-0938.45-F-2023-08-26-0938.45.pdiff [453 B]
Get:11 (Some_Server)/debian bookworm-updates/main all Contents (deb) T-2023-08-26-0938.45-F-2023-08-26-0938.45.pdiff [201 B]
Get:11 (Some_Server)/debian bookworm-updates/main all Contents (deb) T-2023-08-26-0938.45-F-2023-08-26-0938.45.pdiff [201 B]

再試行すると、動作は正常に戻ります。

$ sudo apt update
sudo apt update
Hit:1 (Some_Server)/debian-security bookworm-security InRelease
Hit:2 (Some_Server)/debian bookworm-updates InRelease                            
Hit:3 (Some_Server)/debian bookworm InRelease                                    

このアイテムは何ですか？リポジトリが破損していますか？別のリポジトリに切り替える必要がありますか？