Authorization required: sitemap.xml
Verification word: tricolor

Approve on your phone -- open or scan this on a device with your passkey:
  https://auth.ck1.me/a/eyJhbGciOiJIUzI1NiJ9.eyJyZXMiOnsidHlwZSI6Im9iamVjdCIsImlkIjoic2l0ZW1hcC54bWwifSwid29yZCI6InRyaWNvbG9yIiwianRpIjoiM2YxNDlhMzA3YWFkNGE4MDlmODMzZGRkYWI2ZWYyYzMiLCJpc3MiOiJzZXJ2ZXMuY2sxLm1lIiwiYXVkIjoiYXV0aC5jazEubWUiLCJpYXQiOjE3ODU1NzMxNzAsImV4cCI6MTc4NTU3MzQ3MH0.Lo3Mog1CBPWK7_mPH0tD1xkwRxfe1s9Lqp5sukVaObc

(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.eyJyZXMiOnsidHlwZSI6Im9iamVjdCIsImlkIjoic2l0ZW1hcC54bWwifSwid29yZCI6InRyaWNvbG9yIiwianRpIjoiM2YxNDlhMzA3YWFkNGE4MDlmODMzZGRkYWI2ZWYyYzMiLCJpc3MiOiJzZXJ2ZXMuY2sxLm1lIiwiYXVkIjoiYXV0aC5jazEubWUiLCJpYXQiOjE3ODU1NzMxNzAsImV4cCI6MTc4NTU3MzQ3MH0.Lo3Mog1CBPWK7_mPH0tD1xkwRxfe1s9Lqp5sukVaObc' -o 'sitemap.xml'