Since svn does not support the same range and fork / merge style as git does, you will be limited in how much you can do with the upstream repository. However, locally, this is the usual normal git repository, so you can fork and merge, as well as choose cherries and forwarders, as well as anything your heart desires.
, , : git pull, , git svn rebase, git HEAD, , , ( , git). , git svn dcommit, HEAD svn.