--- a/make-rules/prep-git.mk	Thu Sep 15 14:23:59 2016 -0700
+++ b/make-rules/prep-git.mk	Thu Sep 15 14:25:24 2016 -0700
@@ -104,7 +104,7 @@
 	$(RM) -r $$$${TMP_REPO} ) && \
 	( GIT_HASH=$$$$(digest -a sha256 $$@) && \
 	$(GSED) -i \
-		-e "s/^GIT_HASH$(1)=.*/GIT_HASH$(1)=  sha256:$$$${GIT_HASH}/" \
+		-e "s/\(GIT_HASH$(1)[[:space:]]*=[[:space:]]*\).*/\1sha256:$$$${GIT_HASH}/" \
 		Makefile ))
 
 

--- a/make-rules/prep-hg.mk	Thu Sep 15 14:23:59 2016 -0700
+++ b/make-rules/prep-hg.mk	Thu Sep 15 14:25:24 2016 -0700
@@ -74,7 +74,7 @@
 	 $(RM) -rf $${TMP_REPO} && \
 	 HG_HASH=$$$$(digest -a sha256 $$@) && \
 	 $(GSED) -i \
-		-e "s/^HG_HASH$(1)=.*/HG_HASH$(1)=	sha256:$$$${HG_HASH}/" \
+		-e "s/\(HG_HASH$(1)[[:space:]]*=[[:space:]]*\).*/\1sha256:$$$${HG_HASH}/" \
 		Makefile)
 
 REQUIRED_PACKAGES += developer/versioning/mercurial