For a better solution to xunit/xunit#1651, @akoeplinger and I were trying to understand why the modified date of xunit.abstractions.dll in the xunit.runner.visualstudio.nupkg package is different to the one in the xunit.abstractions.nupkg on nuget.org.

When I locally build this repository, I see the correct last modified date in the produced package:

But when I look at the officially released package on nuget.org, the last modified date is wrong (same for the most recent version on feedz.io):

ℹ️ I unzipped with WinRAR which better handles preserving timestamps than Windows Explorer

@bradwilson any idea where this difference could be coming from?