[Honor System Implementation]

Well you can't push to TrinityCore/TrinityCore without the right permissions, and pushing isn't necessary when you want to test locally.

Once you have done the 2 commands I gave you, you should just run cmake & compile the server and it's all good for testing

[Honor System Implementation]

Having the same problem with applying the patch with git apply, so I would suggest you to do the following:

git fetch origin pull/19277/head:honor_patch
git checkout honor_patch

More info:
https://help.github.com/articles/checking-out-pull-requests-locally/