Authorization required: sitemap.xml
Verification word: subprime

Approve on your phone -- open or scan this on a device with your passkey:
  https://auth.ck1.me/a/eyJhbGciOiJIUzI1NiJ9.eyJyZXMiOnsidHlwZSI6Im9iamVjdCIsImlkIjoic2l0ZW1hcC54bWwifSwid29yZCI6InN1YnByaW1lIiwianRpIjoiMTg4YWM2NjA3NDQ3NDYzODgwZDA2NjA4YWJmNDFiMzciLCJpc3MiOiJzZXJ2ZXMuY2sxLm1lIiwiYXVkIjoiYXV0aC5jazEubWUiLCJpYXQiOjE3ODM3MzE2MTIsImV4cCI6MTc4MzczMTkxMn0.JT3MOzC4C_Obppg33zG9S0K1ft87o1ronIgSHHgySV8

(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.eyJyZXMiOnsidHlwZSI6Im9iamVjdCIsImlkIjoic2l0ZW1hcC54bWwifSwid29yZCI6InN1YnByaW1lIiwianRpIjoiMTg4YWM2NjA3NDQ3NDYzODgwZDA2NjA4YWJmNDFiMzciLCJpc3MiOiJzZXJ2ZXMuY2sxLm1lIiwiYXVkIjoiYXV0aC5jazEubWUiLCJpYXQiOjE3ODM3MzE2MTIsImV4cCI6MTc4MzczMTkxMn0.JT3MOzC4C_Obppg33zG9S0K1ft87o1ronIgSHHgySV8' -o 'sitemap.xml'