Generally I don’t have much to add. Be sure you install the GIT-SVN package first.
sudo apt install git-svn
I followed this guide up to step 3:
https://gist.github.com/epicserve/1219858/9f30d5ffca7d6b6e4130c4b9b300b8167c868a5f
As well as this one: https://git-scm.com/book/en/v2/Git-and-Other-Systems-Migrating-to-Git
I ran in to issues initially because the SVN repository I was trying to port over DIDN’T follow the norm: it had no trunk, tags, or branches folders.
The solution was pretty straight forward once I realized this is why it wasn’t working.
https://git-scm.com/docs/git-svn
Using the --trunk command line argument to git svn. I passed it a blank string --trunk "", and that’s what I needed to find the trunk (which was the root folder).
Once migrated, it was a simple matter of adding a remote (git remote add origin [email protected]:something/something) and pushing. Boom!