Close eclipse.
Save the whole directory on a zip, just in case.
Save all your local change from the revisión you are working on. What I would call `stash your changes` in git terms
inside the directory of the project, run : git init .
Set a remote to the svn clone you made on git
git fetch --all
Find on git the exact same revision you are working on svn
git checkout --force the-revision-id