Published WebApplication JS/CSS/XML files timestamp is not preserved

[Prabusamivelu]

Using Azure DevOps pipeline , We are doing automated build and publishing of our ASP.NET webapplication, Everything is working fine but the published files (JS/XML/CSS) the timestamp is not retained , it is having the timestamp of when the build was executed 

We wanted to retain the actual timestamp as per the repo  

Thanks & Regards

[#2]

Kindly let us know if we are missing any settings , The same is working fine when we do the build in Visual studio and we are able to see the file dates not changed

Appreciate your support and resolution