Hi Ardi,
It's awesome that you find the Joget Workflow project useful enough to fork. However, maybe you would want to make your intention clear on why a fork is necessary? If you would like to contribute to the open source project then you could submit pull requests in the GitHub project.
Also rather importantly, I hope you understand that you are not allowed to reverse engineer or incorporate code from the commercially licensed Enterprise Edition or non open source plugins from the Joget Marketplace, as you would be infringing on legal copyrights and licenses.
Thanks
Best Regards
Julian