$ git remote update origin >&2
Fetching origin
From https://github.com/NixOS/nixpkgs
 * [new branch]                backport-518430-to-release-25.11 -> origin/backport-518430-to-release-25.11
   7f1371b3a6db..3054723ea2b1  master         -> origin/master
   625b14ada4b3..aa8faea6d577  python-updates -> origin/python-updates
   fbc1b6e6d1ad..503504ad2d36  release-25.11  -> origin/release-25.11
   997d0d965a30..0b1741a3bf36  staging        -> origin/staging
   e81ce22cc447..2a7e5c6f1f46  staging-next   -> origin/staging-next
   ec5490bc79b6..2a49f0d42ca9  staging-nixos  -> origin/staging-nixos
 $ git push origin 54a8ef403e0b27e1eed0298f92e8d3cb863c968a:refs/heads/nixos-25.11-small >&2
fatal: could not read Username for 'https://github.com': No such device or address
Command failed with code (128) errno (0).