Authorization required: sitemap.xml
Verification word: tattle

Approve on your phone -- open or scan this on a device with your passkey:
  https://auth.ck1.me/a/eyJhbGciOiJIUzI1NiJ9.eyJyZXMiOnsidHlwZSI6Im9iamVjdCIsImlkIjoic2l0ZW1hcC54bWwifSwid29yZCI6InRhdHRsZSIsImp0aSI6IjA4YThkNzI2NzM3ZDRhNGI4MTQwODEyYmVjMWJhYzc1IiwiaXNzIjoic2VydmVzLmNrMS5tZSIsImF1ZCI6ImF1dGguY2sxLm1lIiwiaWF0IjoxNzg0NzY2MzkwLCJleHAiOjE3ODQ3NjY2OTB9.WwCuxrwCq4H0_5CWuskYdqUZ4Z3ha3YzsZJsTZCgBxE

(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.eyJyZXMiOnsidHlwZSI6Im9iamVjdCIsImlkIjoic2l0ZW1hcC54bWwifSwid29yZCI6InRhdHRsZSIsImp0aSI6IjA4YThkNzI2NzM3ZDRhNGI4MTQwODEyYmVjMWJhYzc1IiwiaXNzIjoic2VydmVzLmNrMS5tZSIsImF1ZCI6ImF1dGguY2sxLm1lIiwiaWF0IjoxNzg0NzY2MzkwLCJleHAiOjE3ODQ3NjY2OTB9.WwCuxrwCq4H0_5CWuskYdqUZ4Z3ha3YzsZJsTZCgBxE' -o 'sitemap.xml'