git tree tags

[andi]

Hi!

In the "standard" linux git repository the different kernel versions are 
tagged, making it possible to check out a particular version.

I tried to check out a older kernel version out of the openmoko kernel 
tree, but I there are no tags (git tag -l does not show a single tag). I 
am not very familiar with git so maybe I am doing something wrong, or 
another mechanism is used making it possible to checkout a particular 
kernel version??

I would really appreciate a hint ;-)
thx
Andi