$ zarf package create . --confirm --no-progress --differential ./zarf-package-longhorn-arm64-1.4.0.tar.zst

Saving log file to
/var/folders/bk/rz1xx2sd5zn134c0_j1s2n5r0000gp/T/zarf-2023-05-19-09-30-01-3248364459.log

Using build directory .
     ERROR:  Failed to create package: unable to create a differential package with the same version as the
             package you are using as a reference; the package version must be incremented