Some of commands used to setup git-mirror:

git svn clone --stdlayout svn://www.ultimatepp.org/upp/trunk

git remote add origin https://github.com/ultimatepp/mirror.git

ssh-keygen -t rsa -b 4096 -C "git-username@gmail.com"

eval "$(ssh-agent -s)"

ssh-add ~/.ssh/id_rsa

ssh -T git@github.com

git remote set-url origin git@github.com:ultimatepp/mirror.git

test of git->svn mirroring