How to update local pkgbase reository same as official one

Hello,

If I update pkgbase repository with `make update-packages`, all
packages are created with newer package version. It means package
always updated to newer version even if it isn't changed from previous
one.

If I check packages in official pkgbase repository, however, different
versions of packages are mixed, and it looks like only really changed
packages are updated to newer version.

Then how official pkgbase repository is updated? Is it possible to
update local pkgbase repository same as official one?

Best Regards,