PHP shell_exec Github Webhook Git Pull

php-shell-exec-git-pull.php

```code
  if($_POST['payload']) {
    echo shell_exec('cd /var/www/html/RepoFolder/ && git reset --hard HEAD && git pull https://[email protected]/username/RepoName.git 2>&1');
  }
```


```code
  //Find the Executing user and give permission
  echo shell_exec('whoami'); 
  eg. apache
  
  //Give write permission to apache 
  sudo chown apache:apache -R RepoFolder

  //Then give permission to apache for git
  sudo chown -R apache:apache "$(git rev-parse --show-toplevel)/.git"
  //source : https://stackoverflow.com/questions/18779442/error-while-pull-from-git-insufficient-permission-for-adding-an-object-to-repo
```