How to check the version of GitLab?

Question

How to check which version of GitLab is installed on the server?

I am about version specified in GitLab changelog:
https://gitlab.com/gitlab-org/gitlab-foss/b

Answer 1

I have updated my server to GitLab 6.6.4 and finally found the way to get version of GitLab remotely without SSH access to server.

You should be logged in to access the following page: https://your.domain.name/help

It shows something similar to:

GitLab 6.6.4 42e34ae

GitLab is open source software to collaborate on code.
...
etc.