If I download the most recent zip archive and then do a build, make keeps whining about clock skew being detected.  This is because several file dates are in the future (I am on US West Coast).

I have no idea how zip stores time information and especially timezone information, but I haven't had this kind of issue with other projects that released their source via zip.  The issue should just go away if there has been sufficient time elapsed between the zip times and local times.  Maybe there is an alternative solution?