convert existing git repo to bare repo

mkdir repo.git
mv repo/.git repo.git
rm -rf repo
cd repo.git
git config --bool core.bare true

git svn clone -s http://svn-server/repo
git svn fetch
git svn dcommit
git svn rebase

svn-remote.<name>.rewriteRoot
This allows users to create repositories from alternate URLs. For example, an administrator could run git svn on the server locally (accessing via file://) but wish to distribute the repository with a public http:// or svn:// URL in the metadata so users of it will see the public URL.
svn-remote.<name>.rewriteUUID
Similar to the useSvmProps option; this is for users who need to remap the UUID manually. This may be useful in situations where the original UUID is not available via either useSvmProps or useSvnsyncProps.

http://www.radcortez.com/i-moved-to-git-svn/

https://stackoverflow.com/questions/5975667/how-to-switch-svn-repositories-using-git-svn

https://epicserve-docs.readthedocs.io/en/latest/git/svn_to_git.html