Hi @pvalen,
The steps you’re describing will mix code from OCS 2.3.6 with code from the unreleased ocs-stable-2_3_6 branch; that won’t work.
The best way to work with code from github is to use the git tool on the machine you’re installing OCS onto, and let it manage the details. There is good introductory documentation on working with git here: Git Clone - How To Use Git Clone | W3Docs Git Online Tutorial
You’ll also have to learn a little about submodules, which are documented here: How to Clone Including Git Submodules
Regards,
Alec Smecher
Public Knowledge Project Team