"svn mv" on directory starting with "@"

Updated: I figured this out, but though I would still post in case anyone
else hits the same issue. The solution is to add the directory separator
at the end of the second argument:

svn mv @foo@ @bar/

See below for original question.

I'm getting bit by a directory that starts with @, and trying to find a
work around for the peg-revision syntax. My destination directory name
always ends up with an @ at the end. Any ideas?

$ svn --version
svn, version 1.8.8 (r1568071)
   compiled Aug 20 2015, 12:51:30 on x86_64-pc-linux-gnu

$ svn mv @foo @bar
svn: E125001: '@foo' is just a peg revision. Maybe try '@foo@' instead?

$ svn mv @foo@ @bar
svn: E125001: '@bar' is just a peg revision. Maybe try '@bar@' instead?

$ svn mv @foo@ @bar@
A @bar@
D @foo
D @foo/bar

$ ls
@bar@
Received on 2015-12-17 07:37:44 CET