I'm seeing this problem, running on Debian Linux, trying to download ORAS from oras.land

With go 1.24.3 installed from the golang website go mod tidy hangs indefinitely, but with go 1.19 from Debian Linux it completes in a reasonable amount of time (About 5 seconds). All other factors are the same.

I thought it could have been my PC (wifi for example) so I transferred my code into a Debian 12 VM in my proxmox cluster (Wired to my router at gigabit) and experienced the exact same issue. I have a 400Mbit/s symmetric fibre to the premis internet link, with considerable monitoring and other systems using it, so it's not an internet outage.

The issue is 100% repeatable.

This looks a lot like a bug in go's downloader, but there doesn't appear to be a lot of debugging available.