Curious result from "git" completion

[Bart Schaefer <schaefer@xxxxxxxxxxxxxxxx>]

schaefer<502> git \'
Completing alias
'
Completing main porcelain command
[remainder suppressed]


What's with the solitary single quote being completed as an alias?

Note that I don't *have* any git aliases as far as I know, so if somebody
more git-savvy is going to try to reproduce this, you'll have to avoid
loading your regular git config.

Here's a bit of _complete_debug output:

: _git_commands:162; local -a aliases unique_aliases
: _git_commands:163; __git_extract_aliases
: __git_extract_aliases:1; aliases=: __git_extract_aliases:1:cmdsubst; _call_pro
gram aliases 'git config -z --get-regexp '\''^alias.'\'
: _call_program:3; local tmp
: _call_program:5:if; zstyle -s :completion::complete:git:argument-1:aliases com
mand tmp
: _call_program:12:else; eval 'git config -z --get-regexp '\''^alias.'\'
: (eval):1:else; git config -z --get-regexp '^alias.'
: __git_extract_aliases:1; aliases=( \' ) 


I was attempting completion in hopes of answering the question, "What's the
simple git equivalent of 'cvs export'?" to which I still have no answer.