How reject works?

Lets say I listen to some push event and for some reason I decide to reject this push. I tried to do something like:

```
repos.on("push", (data: PushData) => {
data.reject(403, `Rejected! Have a good day`)
});
```

It really returns some error to the client, But it doesn't return the specific message I chose (It does send the correct code)

What am I doing wrong?

从 issue 中的 repos.on("push") 处理程序和 data.reject(403, ...) 示例开始，然后使用所示 snippet 重现响应。跟踪 rejection 如何到达客户端，并验证返回的是所选消息以及状态码 403。

由索引模型根据 Issue 内容生成。