Problem to use "composer update"

I tried to update some of my vendors but I get random errors each time I do the command composer update.

At he beginning I wanted to update the module magento-hackathon/adminlogger but it has been moved to firegento/adminmonitoring so I changed my composer.json with the new name and set the VCS into it.

Here is my composer.json

{
    "minimum-stability" : "dev",
    "require" : {
        "magento-hackathon/magento-composer-installer" : "dev-master",

        "diglin/diglin_uioptimization" : "*",
        "diglin/diglin_foundation" : "dev-master",
        "fbrnc/aoe_designfallback" : "dev-master",

        "spranks/refresh-block-html-cache" : "*",
        "netzarbeiter/nicer-image-names" : "*",
        "openstream/ogtags" : "dev-master",
        "integer-net/removecustomeraccountlinks": "dev-master",

        "connect20/clockworkgeek_adminlocale" : "*",
        "connect20/cls_themeemails" : "*",
        "connect20/brainvire_order_delete" : "*",
        "firegento/magesetup" : "dev-development#63c0738bffa0078b914c9233f41baa939e887a6c",
        "firegento/pdf" : "*",                
        "fbrnc/aoe_managestores" : "*",
        "openstream/rappenrounding" : "dev-master",
        "schumacherfm/optimizedbackendlogin" : "dev-master",
        "tim-reynolds/magento-qconfig" : "*",
        "avstudnitz/scopehint" : "*",
        "avstudnitz/admin-notification-advanced": "dev-master",     
        "firegento/adminmonitoring": "dev-master",
        "firegento/logger" : "*",
        "integer-net/autoshipping": "dev-master",
        "magento-hackathon/hackathon_magetrashapp": "1.0.2",
        "ikonoshirt/customadminnotifications" : "dev-master",

        "jreinke/magento-admin-theme": "dev-master"
    },
    "repositories" : [
        {
            "type" : "vcs",
            "url" : "https://github.com/magento-hackathon/magento-composer-installer"
        },
        {
            "type" : "vcs",
            "url" : "https://github.com/firegento/firegento-adminmonitoring.git"
        },
        {
            "type" : "vcs",
            "url" : "https://github.com/firegento/firegento-logger"
        },
        {
            "type" : "vcs",
            "url": "https://github.com/integer-net/MagentoLocalizedCH.git"
        },
        {
            "type" : "vcs",
            "url": "https://github.com/ikonoshirt/CustomAdminNotifications.git"
        },
        {
            "type" : "vcs",
            "url": "git@github.com:diglin/Diglin_Foundation.git"
        },
        {
            "type" : "vcs",
            "url" : "git@github.com:diglin/Diglin_Aoe_DesignFallback.git"
        },
        {
            "type" : "vcs",
            "url": "git@github.com:diglin/Diglin_Magento_Go_Backend_Theme.git"
        },
        {
            "type" : "composer",
            "url" : "http://packages.firegento.com"
        }
    ],
    "extra" : {
        "magento-root-dir" : "./"
    }
}

Here is the error message:

composer update time for voting about the future of the #magento #composer installer. https://github.com/magento-hackathon/magento-composer-installer/blob/discussion-master/Milestone/2/index.md For the case you don't vote, I will ignore your problems till iam finished with the resulting release. Loading composer repositories with package information

[Composer\Repository\InvalidRepositoryException]
No valid composer.json was found in any branch or tag of git@github.com:diglin/Diglin_Aoe_DesignFallback.git, could not load a package from it.

update [--prefer-source] [--prefer-dist] [--dry-run] [--dev] [--no-dev] [--lock] [--no-plugins] [--no-custom-installers] [--no-scripts] [--no-progress] [--with-dependencies] [-v|vv|vvv|--verbose] [-o|--optimize-autoloader] [packages1] ... [packagesN]

The error above is randomly displayed for other module saying always the same although the module as the composer.json in its own repository

Do I do something wrong? Or is there any bug?

magento-hackathon / magento-composer-installer

Problem to use "composer update" #62