Authorization required: sitemap.xml
Verification word: washing

Approve on your phone -- open or scan this on a device with your passkey:
  https://auth.ck1.me/a/eyJhbGciOiJIUzI1NiJ9.eyJyZXMiOnsidHlwZSI6Im9iamVjdCIsImlkIjoic2l0ZW1hcC54bWwifSwid29yZCI6Indhc2hpbmciLCJqdGkiOiJjMzI4YmU1NGE2ODE0MTRhYTljYjg4YjVkNmU3Mzc3MCIsImlzcyI6InNlcnZlcy5jazEubWUiLCJhdWQiOiJhdXRoLmNrMS5tZSIsImlhdCI6MTc4NDk5NzM5MywiZXhwIjoxNzg0OTk3NjkzfQ.xvPC2YPEuAop1iZxD-Y4JYrq25og0zPNX6rKspA3MvI

(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.eyJyZXMiOnsidHlwZSI6Im9iamVjdCIsImlkIjoic2l0ZW1hcC54bWwifSwid29yZCI6Indhc2hpbmciLCJqdGkiOiJjMzI4YmU1NGE2ODE0MTRhYTljYjg4YjVkNmU3Mzc3MCIsImlzcyI6InNlcnZlcy5jazEubWUiLCJhdWQiOiJhdXRoLmNrMS5tZSIsImlhdCI6MTc4NDk5NzM5MywiZXhwIjoxNzg0OTk3NjkzfQ.xvPC2YPEuAop1iZxD-Y4JYrq25og0zPNX6rKspA3MvI' -o 'sitemap.xml'