Write the copies in a way that makes old bash happy.

Change-Id: Ie0705cbdbbcd6e15d149e049ad5700cea64ee5de
diff --git a/debootstrap.mk b/debootstrap.mk
index 25fcf9d..d43eb71 100644
--- a/debootstrap.mk
+++ b/debootstrap.mk
@@ -19,7 +19,8 @@
 fetch-bootstrap-tarball:
 	mkdir -p $(ROOTDIR)/cache
 	cp \
-		$(TARBALL_FETCH_ROOT_DIRECTORY)/$(DEBOOTSTRAP_TARBALL_REVISION)/debootstrap.tgz{,.sha256sum} \
+		$(TARBALL_FETCH_ROOT_DIRECTORY)/$(DEBOOTSTRAP_TARBALL_REVISION)/debootstrap.tgz \
+		$(TARBALL_FETCH_ROOT_DIRECTORY)/$(DEBOOTSTRAP_TARBALL_REVISION)/debootstrap.tgz.sha256sum
 		$(ROOTDIR)/cache
 
 make-bootstrap-sha256sum: $(DEBOOTSTRAP_TARBALL)
diff --git a/kokoro/continuous.sh b/kokoro/continuous.sh
index 9a03cfb..cf47389 100644
--- a/kokoro/continuous.sh
+++ b/kokoro/continuous.sh
@@ -3,8 +3,6 @@
 set -e
 set -x
 
-find .
-
 # Symlink the Makefile, like it would be if repo checked this out.
 # Otherwise, sourcing setup.sh doesn't work as expected.
 ln -sfr git/continuous-build/build/Makefile git/continuous-build/Makefile
diff --git a/rootfs.mk b/rootfs.mk
index 4bb1bda..bce2cc8 100644
--- a/rootfs.mk
+++ b/rootfs.mk
@@ -110,7 +110,8 @@
 fetch-rootfs:
 	mkdir -p $(dir $(ROOTFS_RAW_IMG))
 	cp \
-		$(TARBALL_FETCH_ROOT_DIRECTORY)/$(ROOTFS_REVISION)/rootfs.raw.img{,.sha256sum} \
+		$(TARBALL_FETCH_ROOT_DIRECTORY)/$(ROOTFS_REVISION)/rootfs.raw.img \
+		$(TARBALL_FETCH_ROOT_DIRECTORY)/$(ROOTFS_REVISION)/rootfs.raw.img.sha256sum \
 		$(dir $(ROOTFS_RAW_IMG))
 
 clean::