Sample webhook for https://rtcamp.com/activecollab-gitolite/

hook.php

<?php

$repos['my-repo'] = array (
  "path" => "/var/www/example.com/htdocs/wp-content/plugins/my-repo" ,
	"branch" => "master" 
);

$repos['theme-repo'] = array (
	"path" => "/var/www/example.com/htdocs/wp-content/plugins/theme-repo" ,
	"branch" => "stable" 
);



// DO NOT EDIT BELOW THIS LINE

$payload = json_decode(file_get_contents("php://input"));

if (!isset($payload)) exit(); 

// if repo-name and branch matches
if ( isset ( $repos[$payload->repository->name] ) && ("refs/heads/" . $repos[$payload->repository->name]["branch"]) === $payload->ref ) {
	shell_exec( 'cd ' . $repos[$payload->repository->name]["path"] . '/ && git reset --hard HEAD && git pull' );
}

?>