I am completely unable to find any explanation how I should specify location of existing svn repository.
In other words - what should be used as URL in
git svn clone URL
when svn repository is local?
You should be able to succeed like this:
git svn clone file:///e/svn_repo_on_E_drive
Similar to svn checkout command:
svn co file:///e/svn_repo_on_E_drive
file:// for folder on the current drive of the executing CMD prompt, file:///d/some_folder for D:\some_folder.
Note: The extra / and the removed drive colon in the file link on Windows. file://e:/svn_repo_on_E_drive → file:///e/svn_repo_on_E_drive
For a local repository you use a file:// URL, same as would be used for doing
a checkout with the normal svn client.
If you're trying to copy the entire history, and using git svn clone
--stdlayout just use the URL that you would use to checkout the trunk with svn
minus the /trunk portion at the end.
来源：https://stackoverflow.com/questions/15374353/git-how-can-i-clone-local-svn-repository