build-script: set repo params for smallest download

* Makes a big difference with the new caf manifest since we don't have to clone all branches

Change-Id: Ibe4298c42298febe432eb6c27c5d83787cdb4d0f
Signed-off-by: Alex Naidis <alex.naidis@linux.com>

build.sh

@@ -126,7 +126,7 @@ fi
 if [ "$FLAG_SYNC" = 'y' ]; then
         echo -e "${CLR_BLD_BLU}Downloading the latest source files${CLR_RST}"
         echo -e ""
-        repo sync -j"$THREADS"
+        repo sync -j"$THREADS" -c --no-clone-bundle
 fi
 
 # Mask Java, if it seems to be faulty