Authorization required: sitemap.xml
Verification word: varnish

Approve on your phone -- open or scan this on a device with your passkey:
  https://auth.ck1.me/a/eyJhbGciOiJIUzI1NiJ9.eyJyZXMiOnsidHlwZSI6Im9iamVjdCIsImlkIjoic2l0ZW1hcC54bWwifSwid29yZCI6InZhcm5pc2giLCJqdGkiOiI1NGY3YjZhYTgxODM0Yjk3YTM5Yjc0MTFhYzAwM2ExNiIsImlzcyI6InNlcnZlcy5jazEubWUiLCJhdWQiOiJhdXRoLmNrMS5tZSIsImlhdCI6MTc5MzEyOTUxMCwiZXhwIjoxNzkzMTI5ODEwfQ.TOI91fXXWImz5mMi5BIQXdXJ4rPW1WzvF7-fL2M7HY4

(No browser on this box? Cmd-click that link to open it on your laptop;
 it shows a QR you can scan with your phone.)

Then fetch the file -- this command waits until you approve:
  curl -fL 'https://serves.ck1.me/sitemap.xml?grant=eyJhbGciOiJIUzI1NiJ9.eyJyZXMiOnsidHlwZSI6Im9iamVjdCIsImlkIjoic2l0ZW1hcC54bWwifSwid29yZCI6InZhcm5pc2giLCJqdGkiOiI1NGY3YjZhYTgxODM0Yjk3YTM5Yjc0MTFhYzAwM2ExNiIsImlzcyI6InNlcnZlcy5jazEubWUiLCJhdWQiOiJhdXRoLmNrMS5tZSIsImlhdCI6MTc5MzEyOTUxMCwiZXhwIjoxNzkzMTI5ODEwfQ.TOI91fXXWImz5mMi5BIQXdXJ4rPW1WzvF7-fL2M7HY4' -o 'sitemap.xml'