Authorization required: sitemap.xml
Verification word: reverence

Approve on your phone -- open or scan this on a device with your passkey:
  https://auth.ck1.me/a/eyJhbGciOiJIUzI1NiJ9.eyJyZXMiOnsidHlwZSI6Im9iamVjdCIsImlkIjoic2l0ZW1hcC54bWwifSwid29yZCI6InJldmVyZW5jZSIsImp0aSI6IjFlODM0NTVlNTIyZDRkMDlhMzBiYjliOGU1NTcyOWMzIiwiaXNzIjoic2VydmVzLmNrMS5tZSIsImF1ZCI6ImF1dGguY2sxLm1lIiwiaWF0IjoxNzgzMzY0NDQ2LCJleHAiOjE3ODMzNjQ3NDZ9.XLeZZ-X1FtKbZ-2DcWEXuo_7G_HNhfw8wsQSMCilRhk

(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.eyJyZXMiOnsidHlwZSI6Im9iamVjdCIsImlkIjoic2l0ZW1hcC54bWwifSwid29yZCI6InJldmVyZW5jZSIsImp0aSI6IjFlODM0NTVlNTIyZDRkMDlhMzBiYjliOGU1NTcyOWMzIiwiaXNzIjoic2VydmVzLmNrMS5tZSIsImF1ZCI6ImF1dGguY2sxLm1lIiwiaWF0IjoxNzgzMzY0NDQ2LCJleHAiOjE3ODMzNjQ3NDZ9.XLeZZ-X1FtKbZ-2DcWEXuo_7G_HNhfw8wsQSMCilRhk' -o 'sitemap.xml'