cyberbits is official archive mirror but does not mirror archive
The official archive mirrors are currently these 3 (from https://f-droid.org/archive/index-v1.jar):
"mirrors": [
"https://ftp.fau.de/fdroid/archive",
"https://mirror.cyberbits.eu/fdroid/archive",
"https://fdroid.tetaneutral.net/fdroid/archive"
]But cyberbits mirrors only the main repo.
See directory listing: https://mirror.cyberbits.eu/fdroid/
index-v1.jar returns 404:
https://mirror.cyberbits.eu/fdroid/archive/index-v1.jar
I checked which repos mirror the archive: https://gitlab.com/marzzzello/mirror-monitor#repo-archive