So we cannot check their integrity without failing the hash integrity check in the loader [0] [1] [2].

For now, the only viable solutions would be to skip them from the listing (not be blocked by the few origins like this).
And then report upstream the manifest issues.

• D8637: Skip them from listing
• Notify upstream [3]

[0] T3781#92850

[1] P1489#10067

[2] P1490

[3] https://github.com/nix-community/nixpkgs-swh/issues/4