diff --git a/Makefile b/Makefile
index 2635d69..49f493a 100644
--- a/Makefile
+++ b/Makefile
@@ -40,9 +40,11 @@ submodule.stamp:
 patch.stamp: submodule.stamp patches/series patches/000_plant-a-forest.patch $(wildcard patches/*.patch)
 	@echo "Applying patches"
 	@# `pop -a` return 2 if currently no patches applied, thus ignore exit code
-	@cd $(SUBMODULE_NAME) && \
-	$(QUILT) pop -qfa; \
-	$(QUILT) push -a
+	@cd $(SUBMODULE_NAME) && { \
+		$(QUILT) pop -qfa; \
+		git reset --hard && \
+		$(QUILT) push -a; \
+	}
 	@touch $@