We used to mark the version string with '-dirty' if the cache was not up
to date, but the only thing we want to know is if the binaries are built
from modified source. Refresh the cache to avoid false dirtyness.
Christian Jaeger noticed this issue while building under fakeroot
environment (without -u) that lies about the file ownership data.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
case "$VN" in
*$LF*) (exit 1) ;;
v[0-9]*)
+ git update-index -q --refresh
test -z "$(git diff-index --name-only HEAD --)" ||
VN="$VN-dirty" ;;
esac