[Cooker] What is updating the timestamp on Borges?

[Robert Kulagowski]

Something, somewhere is updating the timestamp on file 
Borges-0.9.3-3mdk.noarch.rpm because it's constantly "new" and is 
re-downloaded by fmirror.

Today at 1341 local time, the file had this size / timestamp:

88289 Sep 15 10:30 
/var/cooker/cooker/i586/Mandrake/RPMS/Borges-0.9.3-3mdk.noarch.rpm

Then today at 1700 localtime, it had this size / timestamp:
88289 Sep 15 15:47 
/var/cooker/cooker/i586/Mandrake/RPMS/Borges-0.9.3-3mdk.noarch.rpm

The only difference is the timestamp.  What's going on?