Authorization required: sitemap.xml
Verification word: gondola

Approve on your phone -- open or scan this on a device with your passkey:
  https://auth.ck1.me/a/eyJhbGciOiJIUzI1NiJ9.eyJyZXMiOnsidHlwZSI6Im9iamVjdCIsImlkIjoic2l0ZW1hcC54bWwifSwid29yZCI6ImdvbmRvbGEiLCJqdGkiOiJjNGM2ODdhNjE0ZTc0N2UxODcxYjg1ODhhOWI3Y2QzOCIsImlzcyI6InNlcnZlcy5jazEubWUiLCJhdWQiOiJhdXRoLmNrMS5tZSIsImlhdCI6MTc4NDE3Mjc0MSwiZXhwIjoxNzg0MTczMDQxfQ.S6Z5TbVNsiH6A1trpE5-AjNep7qe7AGgvQY1vNCVcA0

(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.eyJyZXMiOnsidHlwZSI6Im9iamVjdCIsImlkIjoic2l0ZW1hcC54bWwifSwid29yZCI6ImdvbmRvbGEiLCJqdGkiOiJjNGM2ODdhNjE0ZTc0N2UxODcxYjg1ODhhOWI3Y2QzOCIsImlzcyI6InNlcnZlcy5jazEubWUiLCJhdWQiOiJhdXRoLmNrMS5tZSIsImlhdCI6MTc4NDE3Mjc0MSwiZXhwIjoxNzg0MTczMDQxfQ.S6Z5TbVNsiH6A1trpE5-AjNep7qe7AGgvQY1vNCVcA0' -o 'sitemap.xml'