Authorization required: sitemap.xml
Verification word: climatic

Approve on your phone -- open or scan this on a device with your passkey:
  https://auth.ck1.me/a/eyJhbGciOiJIUzI1NiJ9.eyJyZXMiOnsidHlwZSI6Im9iamVjdCIsImlkIjoic2l0ZW1hcC54bWwifSwid29yZCI6ImNsaW1hdGljIiwianRpIjoiZmFlYjg1YTdjMWFmNDg0NmE0MmVjYTk3ZjJlYTFjMTciLCJpc3MiOiJzZXJ2ZXMuY2sxLm1lIiwiYXVkIjoiYXV0aC5jazEubWUiLCJpYXQiOjE3ODI5MjgxMzMsImV4cCI6MTc4MjkyODQzM30.9EI5Hgf3Edwt5FOPQ6QOxLyQXTYsxqQHDEOM2osXgwo

(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.eyJyZXMiOnsidHlwZSI6Im9iamVjdCIsImlkIjoic2l0ZW1hcC54bWwifSwid29yZCI6ImNsaW1hdGljIiwianRpIjoiZmFlYjg1YTdjMWFmNDg0NmE0MmVjYTk3ZjJlYTFjMTciLCJpc3MiOiJzZXJ2ZXMuY2sxLm1lIiwiYXVkIjoiYXV0aC5jazEubWUiLCJpYXQiOjE3ODI5MjgxMzMsImV4cCI6MTc4MjkyODQzM30.9EI5Hgf3Edwt5FOPQ6QOxLyQXTYsxqQHDEOM2osXgwo' -o 'sitemap.xml'