[Paraview] git question on paraview-superbuild master

[Fabian Wein]

I have a question, which is probably related to my lack of experience 
with git:

https://gitlab.kitware.com/paraview/common-superbuild/blob/master/versions.cmake

contains the line
set(qt5_ver "${qt5_ver_series}.1")

However, when I follow 
https://gitlab.kitware.com/paraview/paraview-superbuild/ and do

git clone --recursive 
https://gitlab.kitware.com/paraview/paraview-superbuild.git
cd paraview-superbuild
git fetch origin
git checkout master
git submodule update

I get with
grep qt5_ver_series superbuild/versions.cmake
the old content
set(qt5_ver "${qt5_ver_series}.0")

However, when I do
cd superbuild
git checkout master

it works:
set(qt5_ver "${qt5_ver_series}.1")

Do I miss something?
Does the checkout always be repeated in superbuild? Then I request to 
change
https://gitlab.kitware.com/paraview/paraview-superbuild/

What is the relationship of paraview-superbuild and common-superbuild?

Thanks,

Fabian