SVN to GIT migration resulting in Huge SIze of GIT Repo

SVN to GIT migration resulting in Huge SIze of GIT Repo

I executed the below commands in git server to migrate a SVN repo to GIT repo
mkdir xyz.git
git init --bare xyz.git
svn git clone http://x.y.x.y/svn/CLF xyz.git
du -sh xyz.git
After doing this the size of GIT repo is showing double the size of
subversion repo. Can you please guide whether the steps that i am
following for migration is right or wrong.