After cloning the project change the username and password of the .env
file:
DB_CONNECTION=mysql
DB_HOST=127.0.0.1
DB_PORT=3306
DB_DATABASE=laravel
DB_USERNAME=your_username
DB_PASSWORD=your_password
run the following on terminal:
sudo service mysql start //if mysql is not running
composer update
php artisan migrate
php artisan passport:install
php artisan passport:client --personal
php artisan key:generate
php artisan serve
A step by step documentation is available here.
Good luck!