Some builds like the one in git-lfs use env -u which is not supported in z/OS's env:
-u name
If the environment variable name is in the environment, then remove it before processing the
remaining options. This is similar to the unset command in sh(1). The value for name must not
include the ‘=’ character.
Some builds like the one in git-lfs use
env -u
which is not supported in z/OS's env: