curl --request GET \
  --url https://api.planetscale.com/v1/organizations/{organization}/databases/{database}/branches/{branch}/keyspaces/{name}/rollout-status \
  --header 'Authorization: <api-key>'

{
  "name": "<string>",
  "state": "<string>",
  "shards": [
    {
      "name": "<string>",
      "last_rollout_started_at": "<string>",
      "last_rollout_finished_at": "<string>",
      "state": "<string>"
    }
  ]
}