Git composer.json

{
    "repositories": [
        {
            "type": "package",
            "package": {
                "name": "sanjoy87/myapp",
                "version": "v1.0.5",
                "source": {
                    "url": "https://github.com/sanjoy87/myapp",
                    "type": "git",
                    "reference": "v1.0.5"
                }
            }
        }
    ],
    "require": {
        "sanjoy87/myapp": "v1.0.5"
    }
}