In such a case, you can use TortoiseGit for Windows to achive a svn to git migration. The beauty in this is that developers may already be used to the Tortoise tools from TortoiseSVN.
|A different, much better aproach is, of course, to migrate in a Linux machine, if you can obtain a Linux box in the company or install VirtualBox locally on your desktop. In this case, a very good migration receipe is: https://www.atlassian.com/git/tutorials/migrating-overview|
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You cann always repeat this process: Fetch new updates from the (still current) svn server, and push the changes to the remote git repository.
- https://www.atlassian.com/git/tutorials/migrating-overview, https://smexyyweby.wordpress.com/2013/09/13/clone-svn-repository-to-git-using-tortoisegit-on-windows