N8N webhook and github webhook

I want to create a webhook in N8N that responds to information from a GitHub webhook and performs an action. However, I don’t know how to do it.

My version of n8n is 0.236.2.

At the moment, I am using the below endpoint in TypeScript:

import { Request, Response } from 'express';
import { verifyGithubPayload } from '../lib/verifyGithubPayload';

const GITHUB_SECRET = process.env.GITHUB_SECRET || '';

export const githubWebhookEndpoint = (req: Request, res: Response) => {
    if (!verifyGithubPayload(req, GITHUB_SECRET)) {
        return res.status(403).send('Invalid request.');
    }
    updateRepository(req, res);
};

const updateRepository = (req: Request, res: Response) => {
    const exec = require('child_process').exec;
    const command = '; 
    exec(command, (error: any) => {
        if (error) return res.status(500).send('Failed to pull repository.');
        res.send('Repository successfully pulled.');
    });
};

But I can’t create something similar in N8N. I want to create the scenario below:
Link to scenario

I tried options 1 and 2, but they are not working:
Link to option 1 and 2

How can I do that?

How about adding GitHub Trigger? It supports dozens of various events:

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