Exemplo de chamada para puxar os total de commits e adições/remoções na branch master.

query_example.gql

link:
https://developer.github.com/v4/explorer/

query { 
  repository(name:"linux" owner:"torvalds"){
    name
    defaultBranchRef {
      id
    }
    object(expression: "master") {
      ... on Commit {
        oid
        history(first: 100, since: "2020-01-01T00:00:00Z" ) {
          totalCount
          nodes {
            oid
            messageHeadline
            author {
              user {
                login
              }
            }
            committedDate
            additions
            deletions
          }
        }
      }
    }
  }
}