diff --git a/yosys/Makefile b/yosys/Makefile
index 6d831e5665f..630d65367b9 100644
--- a/yosys/Makefile
+++ b/yosys/Makefile
@@ -149,7 +149,8 @@ YOSYS_VER := 0.32
 # back to calling git directly.
 TARBALL_GIT_REV := $(shell cat $(YOSYS_SRC)/.gitcommit)
 ifeq ($(TARBALL_GIT_REV),$$Format:%h$$)
-GIT_REV := $(shell GIT_DIR=$(YOSYS_SRC)/.git git rev-parse --short=9 HEAD || echo UNKNOWN)
+#GIT_REV := $(shell GIT_DIR=$(YOSYS_SRC)/.git git rev-parse --short=9 HEAD || echo UNKNOWN)
+GIT_REV := $(shell echo UNKNOWN)
 else
 GIT_REV := $(TARBALL_GIT_REV)
 endif