Authorization required: sitemap.xml
Verification word: skeleton

Approve on your phone -- open or scan this on a device with your passkey:
  https://auth.ck1.me/a/eyJhbGciOiJIUzI1NiJ9.eyJyZXMiOnsidHlwZSI6Im9iamVjdCIsImlkIjoic2l0ZW1hcC54bWwifSwid29yZCI6InNrZWxldG9uIiwianRpIjoiYzQ0ODBlY2U3NjRlNDA2ZTlkNTRhZTMxY2FlNmM0NGUiLCJpc3MiOiJzZXJ2ZXMuY2sxLm1lIiwiYXVkIjoiYXV0aC5jazEubWUiLCJpYXQiOjE3ODMzNzQ0ODIsImV4cCI6MTc4MzM3NDc4Mn0.T-cvzu-T_JRZNXKS5PcwLKQlr-bZtmCXHdOkQc3gfV4

(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.eyJyZXMiOnsidHlwZSI6Im9iamVjdCIsImlkIjoic2l0ZW1hcC54bWwifSwid29yZCI6InNrZWxldG9uIiwianRpIjoiYzQ0ODBlY2U3NjRlNDA2ZTlkNTRhZTMxY2FlNmM0NGUiLCJpc3MiOiJzZXJ2ZXMuY2sxLm1lIiwiYXVkIjoiYXV0aC5jazEubWUiLCJpYXQiOjE3ODMzNzQ0ODIsImV4cCI6MTc4MzM3NDc4Mn0.T-cvzu-T_JRZNXKS5PcwLKQlr-bZtmCXHdOkQc3gfV4' -o 'sitemap.xml'