openide/plugins/github/resources/graphql/query/createPullRequest.graphql

mutation ($repositoryId: ID!, $baseRefName: String!, $headRefName: String!, $title: String!, $body: String, $draft: Boolean = false) {
  createPullRequest(input: {
    repositoryId: $repositoryId,
    baseRefName: $baseRefName,
    headRefName: $headRefName,
    title: $title,
    body: $body,
    draft: $draft
  }) {
    pullRequest {
      ...pullRequestInfoShort
    }
  }
}