All JRuby maintainers use git-svn for managing their versioning. But jruby on github supported manually.
I’ve also try to use git-svn on my Windows machine and encounter an error:
fatal error - unable to remap cygdb-4.2.dll to same address as parentAfter some googling I’ve found similar problem for python on cygwin(git-svn uses perl).
Again 2-step solution: