Magento Community Magento-1.x Mirror Github Repository with Patches.
Important note: Since Magento 1 end of life on 30 june 2020 this repository will not be supported.
Consider using https://github.com/OpenMage/magento-lts instead.
To generate composer.json and install magento for the first time run:
composer require magento-hackathon/magento-composer-installer ~3.0
composer require aydin-hassan/magento-core-composer-installer ~1.2
composer require kirchbergerknorr/magento ~1.9.4.5