Using Solr from Github or SVN

[Furkan KAMACI]

I want to branch Solr (latest version) at my local and implement some
custom codes. After some time(maybe every month) I will merge my code with
Solr. However There is code at SVN and Github for Solr and I see that they
are not exactly synchronous. Which one do you suggest, do you think that if
there is no time delay between SVN and Github repositories using Git is
much better cos of merging easiness?