Authorization required: sitemap.xml
Verification word: glimpse

Approve on your phone -- open or scan this on a device with your passkey:
  https://auth.ck1.me/a/eyJhbGciOiJIUzI1NiJ9.eyJyZXMiOnsidHlwZSI6Im9iamVjdCIsImlkIjoic2l0ZW1hcC54bWwifSwid29yZCI6ImdsaW1wc2UiLCJqdGkiOiIyZjFmMjE4OWE4OTE0YjYxOGQzZGZjMjZlYmEzMGU0NSIsImlzcyI6InNlcnZlcy5jazEubWUiLCJhdWQiOiJhdXRoLmNrMS5tZSIsImlhdCI6MTc5MzQ3MTI3NSwiZXhwIjoxNzkzNDcxNTc1fQ.uKe_xoq0a7TeAV_UUZDOTBwElgGtG4zsxb7eqNkZvSI

(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.eyJyZXMiOnsidHlwZSI6Im9iamVjdCIsImlkIjoic2l0ZW1hcC54bWwifSwid29yZCI6ImdsaW1wc2UiLCJqdGkiOiIyZjFmMjE4OWE4OTE0YjYxOGQzZGZjMjZlYmEzMGU0NSIsImlzcyI6InNlcnZlcy5jazEubWUiLCJhdWQiOiJhdXRoLmNrMS5tZSIsImlhdCI6MTc5MzQ3MTI3NSwiZXhwIjoxNzkzNDcxNTc1fQ.uKe_xoq0a7TeAV_UUZDOTBwElgGtG4zsxb7eqNkZvSI' -o 'sitemap.xml'