git-touch/lib/graphql/gh_follow.graphql

mutation GhFollow($id: ID!, $flag: Boolean!) {
  followUser(input: { userId: $id }) @include(if: $flag) {
    user {
      viewerIsFollowing
    }
  }
  unfollowUser(input: { userId: $id }) @skip(if: $flag) {
    user {
      viewerIsFollowing
    }
  }
}