Why do I get this error message?
I got this message after I incorrectly added the -s/--stdlayout parameter to the git svn clone command for a Subversion repo that did not have the "standard Subversion layout" of trunk, tags, and branches relative paths.
(The Subversion repos I usually clone do have the standard relative paths, so when I cloned a Subversion repo that didn't have them using my usual git svn clone command, I got this cryptic message. The message is 100% correct, but almost 100% useless when trying to figure out what the problem is.)