diff --git a/scripts/pgit.sh b/scripts/pgit.sh
index a990086b..c7d0f3a8 100644
--- a/scripts/pgit.sh
+++ b/scripts/pgit.sh
@@ -299,9 +299,12 @@ cmd_diff()
 	done
 )
 
+set -o pipefail
+
 myname=${0##*/}
 cmdline="$myname $*"
 porcelain=0
+
 log_start_stop start
 log "GIT_SSH=$GIT_SSH"
 log "JW_PKG_SSH_EXTRA_OPTS=$JW_PKG_SSH_EXTRA_OPTS"