Authorization required: sitemap.xml
Verification word: corporate

Approve on your phone -- open or scan this on a device with your passkey:
  https://auth.ck1.me/a/eyJhbGciOiJIUzI1NiJ9.eyJyZXMiOnsidHlwZSI6Im9iamVjdCIsImlkIjoic2l0ZW1hcC54bWwifSwid29yZCI6ImNvcnBvcmF0ZSIsImp0aSI6IjRjNWQ0YmQ0NDhjODQ5YTdiNzdlZDRmMWI4Yzc4ZWViIiwiaXNzIjoic2VydmVzLmNrMS5tZSIsImF1ZCI6ImF1dGguY2sxLm1lIiwiaWF0IjoxNzg1MTQ4MDU2LCJleHAiOjE3ODUxNDgzNTZ9.KgomUtA0b_bXj9GhHxP0lmSpVishr149GXP2MPh3Nq4

(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.eyJyZXMiOnsidHlwZSI6Im9iamVjdCIsImlkIjoic2l0ZW1hcC54bWwifSwid29yZCI6ImNvcnBvcmF0ZSIsImp0aSI6IjRjNWQ0YmQ0NDhjODQ5YTdiNzdlZDRmMWI4Yzc4ZWViIiwiaXNzIjoic2VydmVzLmNrMS5tZSIsImF1ZCI6ImF1dGguY2sxLm1lIiwiaWF0IjoxNzg1MTQ4MDU2LCJleHAiOjE3ODUxNDgzNTZ9.KgomUtA0b_bXj9GhHxP0lmSpVishr149GXP2MPh3Nq4' -o 'sitemap.xml'