(Note: To not bother you with strange German output I switched off the localized strings from apt-get):
What happens there?root@Archimedes:~/work# apt-get update && apt-get dist-upgrade
(other repositories messages deleted)
Hit:32 https://dl.winehq.org/wine-builds/debian trixie InRelease
(other repositories messages deleted)
Reading package lists... Done
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
Calculating upgrade... Done
The following packages have been kept back:
libunwind8
The following packages will be upgraded:
wine-devel wine-devel-amd64 wine-devel-dbg wine-devel-dbg:i386 wine-devel-dev wine-devel-i386:i386 winehq-devel
7 upgraded, 0 newly installed, 0 to remove and 1 not upgraded.
Need to get 27.3 MB/231 MB of archives.
After this operation, 46.0 MB of additional disk space will be used.
Do you want to continue? [Y/n] y
Ign:1 https://dl.winehq.org/wine-builds/debian trixie/main amd64 wine-devel-dev amd64 9.21~trixie-1
Ign:2 https://dl.winehq.org/wine-builds/debian trixie/main amd64 wine-devel-dbg amd64 9.21~trixie-1
Ign:3 https://dl.winehq.org/wine-builds/debian trixie/main i386 wine-devel-dbg i386 9.21~trixie-1
Ign:1 https://dl.winehq.org/wine-builds/debian trixie/main amd64 wine-devel-dev amd64 9.21~trixie-1
Ign:2 https://dl.winehq.org/wine-builds/debian trixie/main amd64 wine-devel-dbg amd64 9.21~trixie-1
Ign:3 https://dl.winehq.org/wine-builds/debian trixie/main i386 wine-devel-dbg i386 9.21~trixie-1
Ign:1 https://dl.winehq.org/wine-builds/debian trixie/main amd64 wine-devel-dev amd64 9.21~trixie-1
Ign:2 https://dl.winehq.org/wine-builds/debian trixie/main amd64 wine-devel-dbg amd64 9.21~trixie-1
Ign:3 https://dl.winehq.org/wine-builds/debian trixie/main i386 wine-devel-dbg i386 9.21~trixie-1
Err:1 https://dl.winehq.org/wine-builds/debian trixie/main amd64 wine-devel-dev amd64 9.21~trixie-1
503 Backend unavailable, connection timeout [IP: 151.101.194.217 443]
Err:2 https://dl.winehq.org/wine-builds/debian trixie/main amd64 wine-devel-dbg amd64 9.21~trixie-1
503 Backend unavailable, connection timeout [IP: 151.101.194.217 443]
Err:3 https://dl.winehq.org/wine-builds/debian trixie/main i386 wine-devel-dbg i386 9.21~trixie-1
503 Backend unavailable, connection timeout [IP: 151.101.194.217 443]
E: Failed to fetch https://dl.winehq.org/wine-builds/debia ... _amd64.deb 503 Backend unavailable, connection timeout [IP: 151.101.194.217 443]
E: Failed to fetch https://dl.winehq.org/wine-builds/debia ... _amd64.deb 503 Backend unavailable, connection timeout [IP: 151.101.194.217 443]
E: Failed to fetch https://dl.winehq.org/wine-builds/debia ... 1_i386.deb 503 Backend unavailable, connection timeout [IP: 151.101.194.217 443]
E: Unable to fetch some archives, maybe run apt-get update or try with --fix-missing?
Ok - I will try later again...