.gitignore

node_modules

index.js

var express = require('express'),
    git     = require('gitty');

var app = express();

var web_webhook = git('/var/www/web');

app.get('/web', function(req, res) {
  web_webhook.pull('origin', 'master', function(err, succ) {
    if (err) return console.log(err);
    
    console.log('/web', succ);

    return res.status(200).end();
  });
});

app.listen(8181);

package.json

{
  "name": "web-webhook",
  "version": "1.0.0",
  "description": "",
  "main": "index.js",
  "scripts": {
    "test": "echo \"Error: no test specified\" && exit 1"
  },
  "author": "",
  "license": "MIT",
  "dependencies": {
    "express": "4.13.3",
    "gitty": "3.2.3"
  }
}