$(Q) rm -rf $(tarball) $(tarball_pfx)
$(Q) git archive --format=tar --prefix=$(tarball_pfx)/ HEAD \
| tar --delete $(tarball_delete) > $(tarball_pfx).tar
$(Q) rm -rf $(tarball) $(tarball_pfx)
$(Q) git archive --format=tar --prefix=$(tarball_pfx)/ HEAD \
| tar --delete $(tarball_delete) > $(tarball_pfx).tar