git-shortlog hangs on bare repo without --bare option

I didn't see this happen with git 1.5.x, but if you do git-shortlog on a bare 
repo, without specifying --bare, the command will seemingly hang indefinitely.

Here's my output:

[garry@garry-thinkpad] ~/dev (master) $ cd ebay4r/                       <----- Repo with working tree (non-bare)
[garry@garry-thinkpad] ~/dev/ebay4r (master) $ git shortlog -e -s
   130  Garry Dolley [off-list ref]
[garry@garry-thinkpad] ~/dev/ebay4r (master) $ cd ..
[garry@garry-thinkpad] ~/dev (master) $ git clone --mirror ebay4r/ ebay4r-bare
Initialized empty Git repository in /home/garry/dev/ebay4r-bare/
[garry@garry-thinkpad] ~/dev (master) $ cd ebay4r-bare/
[garry@garry-thinkpad] ~/dev/ebay4r-bare (master) $ git shortlog -e -s
<hang>                                                                   <----- *** It hangs here ***

[garry@garry-thinkpad] ~/dev/ebay4r-bare (master) $ git --bare shortlog -e -s
   130  Garry Dolley [off-list ref]
[garry@garry-thinkpad] ~/dev/ebay4r-bare (master) $ 


If newlines break this output in your reader, you can also view it 
here: http://pastie.org/261134

I'm using git 1.6.0.1

Is this a bug?

-- 
Garry Dolley
ARP Networks, Inc.
818-206-0181
Los Angeles County REACT, Unit 336
WQGK336