No common commits question

Hi,

I have been tracking the Linux kernel with for at least a year now doing frequent pulls (once every other day or so). I'm not doing any development so it should be a clean update everytime. However once in a while I get a "no common commit" warning and git starts to download the entire repo again. (It happened again today - therefore this mail)

As Im not changing anything I would not expect this to happen, but I may be wrong. Can anyone explain?

Im using Ubuntu 8.04 using the following version of git and Linux:
- git version 1.5.4.3
- Linux neo 2.6.24-19-generic #1 SMP Wed Jun 4 16:35:01 UTC 2008 i686
GNU/Linux

Finally I would like to take the opportunity to thank all of you developers for a GREAT tool. Im currently working as a Software Release manager and have been working with many of the commercial competitors and what surprises me about git is that it seems to solve all of the *BIG* problems you have with SCM in a big corporate environment. Unfortunately we are NOT using git for the major part of my work, so Im currently only really enjoing git in my spare time :-)

Regards

Lars Jarnbo Pedersen