/original/0.1
/original/0.2
/variantA/trunk
/variantA/branches/who/branch_for_xxx
/variantA/branches/she/branch_for_yyy
/variantB/trunk
/variantB/branches/who/branch_for_zzz
(... 30 or 40 alike)

cat "mysvnusername = Me Myself <me.myself@somewhere.com>" >> authors.txt

svnserve --daemon --foreground --root <SVN-REPO-PARENT-DIR>
git svn clone --stdlayout --authors-file=authors.txt --no-metadata svn://localhost/<SVN-REPO-NAME>

# push to a public repo and clone from there, to get push/pull working easily
cd <SVN-REPO-NAME>
git remote add origin git@github.com:mygithubusername/<GIT-REPO-NAME>.git
git push origin master
cd ..
rm -rf <SVN-REPO-NAME>

git clone git@github.com:mygithubusername/<GIT-REPO-NAME>.git

/branches/original-0.1
/branches/original-0.2
/branches/variantA-trunk
/branches/variantA-who-branch_for_xxx
/branches/variantA-she-branch_for_yyy
/branches/variantB-trunk
/branches/variantB-who-branch_for_zzz
...