How to tell composer to use a branch of my fork?

Question

In a symfony2 project, I am using "jms/serializer-bundle" and I have an issue with one of its dependencies, namely the jms/metadata libary. I have forked the metadata library and included a fix in the bugfix-doctrine-proxy branch.

Now I am wondering how to tell composer, that it should use my branch when requiring the dependency?

The composer.json of the serializer library:

{
    "name": "jms/serializer",
    "type": "library",
    ...
    ],
    "require": {
        "php": ">=5.3.2",
        "jms/metadata": "~1.1",
        "jms/parser-lib": "1.*",
        "phpcollection/phpcollection": "~0.1",
        "doctrine/annotations": "1.*"
    },
    ...
}

My symfony2-project composer.json:

{
    ...
    "repositories": [
        {
            "type": "git",
            "url": "git@github.com:hauptsacheNet/metadata.git"
        }
    ],
    "require": {
        "jms/serializer-bundle": "dev-master",
        ...
    }
}

Answer 1

The answer was to use a branch alias:

{
"repositories": [
        {
            "type": "git",
            "url": "git@github.com:hauptsacheNet/metadata.git"
        }
    ],
    "require": {
        "jms/metadata": "dev-bugfix-doctrine-proxy-class as 1.1",
    },
}