Repository.graphql

query Repository {
  repository(owner: "apollographql", name: "apollo-ios") {
    issueOrPullRequest(number: 13) {
      ... on Issue {
        body
        __typename
        ... on UniformResourceLocatable {
          url
        }
        author {
          avatarUrl
        }
      }
      ... on Reactable {
        viewerCanReact
        ... on Comment {
          author {
            login
          }
        }
      }
    }
  }
}