What's the best/clearest solution to adapt "two" versions of a plugin

I have a fork of the redmine_backlogs plugin on github (https://github.com/SeyZ/redmine_backlogs).

I want to add some new generic features to improve the plugin. However, I need some specific changes for my comp开发者_JS百科any.

What's the best/clearest solution to adapt "two" versions of the plugin (the first version for everybody and the second one for my company) ?

When I add a feature in the generic_version of the backlogs, I want the same feature in my company_version. Not the contrary !

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Fork the plugin with github for the generic/public version. And make a fork/clone of that one for your company.

You can add public features and use git pull to get these features into your company version. When adding company related features, the public version will not have these (unless you perform a git push I suppose, so better not do that!)

I think that you could also create an empty git repository of your company and use git pull <url> to get the public features into this version. In this situation you cannot easily/accidentally push your companies changes into the public version.