Authorization required: sitemap.xml
Verification word: deskbound

Approve on your phone -- open or scan this on a device with your passkey:
  https://auth.ck1.me/a/eyJhbGciOiJIUzI1NiJ9.eyJyZXMiOnsidHlwZSI6Im9iamVjdCIsImlkIjoic2l0ZW1hcC54bWwifSwid29yZCI6ImRlc2tib3VuZCIsImp0aSI6ImRlZGQyMGYzNzczODRiYWM5MTg0YjQ2YmY4ZjIzNTBiIiwiaXNzIjoic2VydmVzLmNrMS5tZSIsImF1ZCI6ImF1dGguY2sxLm1lIiwiaWF0IjoxNzgyOTQ5OTM2LCJleHAiOjE3ODI5NTAyMzZ9.iFhaWhFFsgarOjsjBz0aNHHl9-x32l1vq1_L35sOQgg

(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.eyJyZXMiOnsidHlwZSI6Im9iamVjdCIsImlkIjoic2l0ZW1hcC54bWwifSwid29yZCI6ImRlc2tib3VuZCIsImp0aSI6ImRlZGQyMGYzNzczODRiYWM5MTg0YjQ2YmY4ZjIzNTBiIiwiaXNzIjoic2VydmVzLmNrMS5tZSIsImF1ZCI6ImF1dGguY2sxLm1lIiwiaWF0IjoxNzgyOTQ5OTM2LCJleHAiOjE3ODI5NTAyMzZ9.iFhaWhFFsgarOjsjBz0aNHHl9-x32l1vq1_L35sOQgg' -o 'sitemap.xml'