Authorization required: sitemap.xml
Verification word: kebab

Approve on your phone -- open or scan this on a device with your passkey:
  https://auth.ck1.me/a/eyJhbGciOiJIUzI1NiJ9.eyJyZXMiOnsidHlwZSI6Im9iamVjdCIsImlkIjoic2l0ZW1hcC54bWwifSwid29yZCI6ImtlYmFiIiwianRpIjoiZWJjMTAzMDgxYzY4NDBjN2JiZTRmODkwNmM5ZTQzYjgiLCJpc3MiOiJzZXJ2ZXMuY2sxLm1lIiwiYXVkIjoiYXV0aC5jazEubWUiLCJpYXQiOjE3ODUxOTg2ODYsImV4cCI6MTc4NTE5ODk4Nn0.SH_PdkMKjOsPY25iuAxLj9Y8Kc1AuqFT6CcrFnpHW0Y

(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.eyJyZXMiOnsidHlwZSI6Im9iamVjdCIsImlkIjoic2l0ZW1hcC54bWwifSwid29yZCI6ImtlYmFiIiwianRpIjoiZWJjMTAzMDgxYzY4NDBjN2JiZTRmODkwNmM5ZTQzYjgiLCJpc3MiOiJzZXJ2ZXMuY2sxLm1lIiwiYXVkIjoiYXV0aC5jazEubWUiLCJpYXQiOjE3ODUxOTg2ODYsImV4cCI6MTc4NTE5ODk4Nn0.SH_PdkMKjOsPY25iuAxLj9Y8Kc1AuqFT6CcrFnpHW0Y' -o 'sitemap.xml'