以下続き

fatal: repository 'https://github.com/dropbox/dropbox-sdk-php.git.git/' not found

Now trying to download from dist
- Installing dropbox/dropbox-sdk (dev-master 51ef6a2): Downloading (connectingDownloading (failed)

[Composer\Downloader\TransportException]
The "https://api.github.com/repos/dropbox/dropbox-sdk-php/zipball/51ef6a2c1
e6228a3f16e2bf0b1867b7e2e5196eb" file could not be downloaded (HTTP/1.1 404
Not Found)


install [--prefer-source] [--prefer-dist] [--dry-run] [--dev] [--no-dev]
[--no-custom-installers] [--no-autoloader] [--no-scripts] [--no-progress]
[--no-suggest] [-v|vv|vvv|--verbose] [-o|--optimize-autoloader] [-a|--classmap-authoritative]
[--apcu-autoloader] [--ignore-platform-reqs] [--] [<packages>]...

hogehoge@hoge:~/share/htdocs/p2-php$

とかって出てくるんだけどなんか設定間違ってるのかなぁ？
ssh -T github
でパスフレーズ入力すると
Hi hogehogehoge! You've successfully authenticated, but GitHub does not provide shell access.
となるから、パスフレーズの成否とglobalの設定は出来てると思うんですが