Cannot relocate svn

I have to change my SVN repo URL so I run:

svn relocate [new_url]

Output:

svn: E170011: Repository moved temporarily to [new_url]

Running echo $? gives 1 back. Operations like checkout are also causing the same issue. Both [new_url]s are the same. But when I run svn info it still shows the old URL. If I try to commit changes it goes to the old repo. How do I fix this issue? I'm using Subversion with Git for Windows. I'm not using git-svn, I'm using the original subversion CLI. Edit: On the SVN server, I run this command:

svn checkout http://localhost/svn/testrepo

And it outputs:

Redirecting to URL 'http://localhost/svn/testrepo/':
svn: /build/subversion-owKwd0/subversion-1.13.0/subversion/libsvn_subr/dirent_uri.c:1562: uri_skip_ancestor: Assertion `svn_uri_is_canonical(child_uri, NULL)' failed.
Aborted

I'm using apache2 server with dav_svn module to serve svn repos. Apache2 Configuration (/etc/apache2/mods-enabled/dav_svn.conf):

Alias /svn /svn


 DAV svn
 SVNParentPath /svn
 AuthType Basic
 AuthName "Auth"
 AuthUserFile /etc/apache2/dav_svn.passwd
 
  Require valid-user