Fetching new revisions after a directory move in SVN

I have a git-svn configuration as follows:

[svn-remote "svn"]
    rewriteRoot = http://myproject
    url = http://myserver/myproject/trunk/proj
    fetch = :refs/remotes/git-svn

My company decided to move the directory trunk to v100 (at re开发者_Go百科vision xxxxx).

After the move, I updated the url attribute but I am no longer able to do a git svn rebase. git-svn chokes with some SVN error (Cannot replace a directory from within).

A fresh checkout fetches only revisions newer than xxxxx.

How can I get all revisions and still have continuous history?

I think we had configured the git-svn sync wrongly. We should have used:

[svn-remote "svn"]
    rewriteRoot = http://myproject
    url = http://myserver/myproject
    fetch = trunk/proj:refs/remotes/git-svn

That is, "trunk/proj" should have been part of the "fetch". If I make a fresh git svn clone with this, I am able to get previous versions as well.