Authorization required: sitemap.xml
Verification word: customize

Approve on your phone -- open or scan this on a device with your passkey:
  https://auth.ck1.me/a/eyJhbGciOiJIUzI1NiJ9.eyJyZXMiOnsidHlwZSI6Im9iamVjdCIsImlkIjoic2l0ZW1hcC54bWwifSwid29yZCI6ImN1c3RvbWl6ZSIsImp0aSI6ImJkMTVkNGE3ZTBlMDQxODU4NjgxYzZiYzljN2YwMWJkIiwiaXNzIjoic2VydmVzLmNrMS5tZSIsImF1ZCI6ImF1dGguY2sxLm1lIiwiaWF0IjoxNzgzMDcxMjQ0LCJleHAiOjE3ODMwNzE1NDR9.NTPyF8DGrKkd5NLn-ER6H_s0DYV_sUOchoGKbfdeaho

(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.eyJyZXMiOnsidHlwZSI6Im9iamVjdCIsImlkIjoic2l0ZW1hcC54bWwifSwid29yZCI6ImN1c3RvbWl6ZSIsImp0aSI6ImJkMTVkNGE3ZTBlMDQxODU4NjgxYzZiYzljN2YwMWJkIiwiaXNzIjoic2VydmVzLmNrMS5tZSIsImF1ZCI6ImF1dGguY2sxLm1lIiwiaWF0IjoxNzgzMDcxMjQ0LCJleHAiOjE3ODMwNzE1NDR9.NTPyF8DGrKkd5NLn-ER6H_s0DYV_sUOchoGKbfdeaho' -o 'sitemap.xml'