Bundle: Better approach for previous commit

Saves some submodule checkout, which is especially slow
on WIndows for some reason.

bundle/bundle-linux.sh

@@ -244,14 +244,15 @@ GIT_C="${GIT} -C ${SOURCE_DIRECTORY}"
 if [ ! -d "${SOURCE_DIRECTORY}" ]; then
   echo "Checking out Blender.git..."
   ${GIT} clone "${GIT_BLENDER_REPOSITORY}" "${SOURCE_DIRECTORY}"
+  echo "Switching to benchmark branch..."
+  ${GIT_C} checkout ${GIT_BENCHMARK_BRANCH}
   echo "Initializing submodules..."
   ${GIT_C} submodule update --init --recursive
+else
+  echo "Switching to benchmark branch..."
+  ${GIT_C} checkout ${GIT_BENCHMARK_BRANCH}
 fi
 
-echo "Switching to benchmark branch..."
-${GIT_C} checkout ${GIT_BENCHMARK_BRANCH}
-echo "Initializing branch submodules..."
-${GIT_C} submodule update --init --recursive
 echo "Checking to a latest branch..."
 ${GIT_C} pull
 echo "Updatying submodules to the latest version..."