GitHub GraphQL repo commit history query

query.graphql

{
  repository(name: "sickvim", owner: "jonathansick") {
    ref(qualifiedName: "master") {
      target {
        ... on Commit {
          id
          history(first: 5) {
            pageInfo {
              hasNextPage
            }
            edges {
              node {
                messageHeadline
                oid
                message
                author {
                  name
                  email
                  date
                }
              }
            }
          }
        }
      }
    }
  }
}

I let this here maybe it helps somebody else to get commits for defaultBranchRef:

  {
    repository(owner: "sulu", name: "sulu") {
      defaultBranchRef {
        name
        target {
          ... on Commit {
            history {
              totalCount
            }
          }
        }
      }
      stargazers {
        totalCount
      }
      releases {
        totalCount
      }
    }
  }