Dear Ada and Ludo,thanks Ada for bringing this issue up again. I get the same error on `guix pull` almost always when I am on my enterprise network. Re-running `guix pull` a second time also almost always then runs fine. I checked with our IT: nothing suspicious on the network, i.e. no firewall blocking.
I never experienced the error on my home network. Ludo, it would just awesome if your fix resolves the issue! Thanks a lot, Lars