Git command not available

On my Ubuntu 14.04 LTS server, there are many applications running next to gitlab 8.2.3.
For one of them, pydio, I want to use git for file versioning and history.
This requires git to be available on command line. But it isn’t.
Gitlab seems to use a packaged git internally.
How do I use this packaged version on command line?
Can I install the Ubuntu git package next to gitlab (which was installed with omnibus) without any conflicts?