diff --git a/.makefile b/.makefile
index b12b4a8161..85c10b3d16 100644
--- a/.makefile
+++ b/.makefile
@@ -437,7 +437,7 @@ PB_DIR == racket/src/ChezScheme/boot/pb
 fetch-pb-from:
 	mkdir -p racket/src/ChezScheme/boot
 	if [ ! -d racket/src/ChezScheme/boot/pb ] ; \
-	  then git clone -q --single-branch -b $(PB_BRANCH) $(PB_REPO) $(PB_DIR) ; \
+	  then git clone -q -b $(PB_BRANCH) $(PB_REPO) $(PB_DIR) ; \
 	  else cd $(PB_DIR) && git fetch -q origin $(PB_BRANCH):remotes/origin/$(PB_BRANCH) ; fi
 	cd $(PB_DIR) && git checkout -q $(PB_BRANCH)
 
diff --git a/Makefile b/Makefile
index ff12a658aa..12989afd16 100644
--- a/Makefile
+++ b/Makefile
@@ -307,7 +307,7 @@ maybe-fetch-pb-as-is:
 	echo done
 fetch-pb-from:
 	mkdir -p racket/src/ChezScheme/boot
-	if [ ! -d racket/src/ChezScheme/boot/pb ] ; 	  then git clone -q --single-branch -b circa-7.9.0.15-1 $(PB_REPO) racket/src/ChezScheme/boot/pb ; 	  else cd racket/src/ChezScheme/boot/pb && git fetch -q origin circa-7.9.0.15-1:remotes/origin/circa-7.9.0.15-1 ; fi
+	if [ ! -d racket/src/ChezScheme/boot/pb ] ; 	  then git clone -q -b circa-7.9.0.15-1 $(PB_REPO) racket/src/ChezScheme/boot/pb ; 	  else cd racket/src/ChezScheme/boot/pb && git fetch -q origin circa-7.9.0.15-1:remotes/origin/circa-7.9.0.15-1 ; fi
 	cd racket/src/ChezScheme/boot/pb && git checkout -q circa-7.9.0.15-1
 pb-fetch:
 	$(MAKE) fetch-pb EXTRA_REPOS_BASE="$(EXTRA_REPOS_BASE)" PB_REPO="$(PB_REPO)"