403 forbidden when copying path with no permissions

I'm having issues doing an svn copy on the trunk of my project because I don't have read permissions to a directory further down the tree. My example authz:
  [test:/]
  myuser=rw
  [test:/proj1/trunk/dir1/dir1.2]
  myuser=

The /proj1/trunk/dir1/dir1.2 was deleted a couple of revisions ago, so the project at HEAD looks like this:
  branches/
  tags/
  trunk/
  trunk/dir1/
  trunk/dir1/dir1.1/

When I try to copy trunk I get a 403 forbidden:
  svn copy https://svn/svn/test/proj1/trunk https://svn/svn/test/proj1/branches/branch1 -m "test"
    svn: access to '/svn/test/!svn/bc/6/proj1/trunk' forbidden

However if I give myself read permissions on /proj1/trunk/dir1/dir1.2 I can do the copy.
Why is svn trying to access the directory if it doesn't exist at HEAD? Any help on this would be great.

Thanks

*bypass*
Received on 2011-08-25 16:32:56 CEST