A recent attempt to update bundles returned 

"sh: git: command not found"

But in terminal, I see

 bash-$ git --version
git version 1.7.3.1

which is something new. What's happening?

I'm running TM Version 1.5.10 (1623)

Model Identifier: MacBook5,1

  Processor Name: Intel Core 2 Duo

  Processor Speed: 2.4 GHz

with OS X 10.6.5