Enumerate pinned items owned by stargazers of a repository with given owner and name

stargazer-repos.graphql

query ($owner: String!, $name: String!, $gazers: Int, $items: Int) {
  repository(owner: $owner, name: $name) {
    name
    description
    resourcePath
    id
    stargazers(last: $gazers, orderBy: {field: STARRED_AT, direction: DESC}) {
      edges {
        starredAt
        node {
          name
          id
          itemShowcase {
            items(first: $items) {
              edges {
                node {
                  ... on Repository {
                    id
                    url
                    name
                    description
                  }
                }
              }
            }
          }
        }
      }
    }
  }
}

... as pictured here in the GraphiQL app: