[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 
[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
                                                                   <----- *** It hangs here ***

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