genealogytree package: left align timeflow=down tree

I try to make a family tree using the genealogytree package. I would like to follow the downwards timeflow but still left align every generation. Any idea how to do so? I want the males to be directly under each other Minimal code example (the complete version is huge with lot of additional informations, so I want to be able to follow the direct line on the left):

\documentclass[11pt]{article}
\usepackage[utf8]{inputenc}
\usepackage[all]{genealogytree}
\begin{document}

\begin{genealogypicture}[
node size=4cm,
level size=2cm,
level distance=1cm,
timeflow=down,
]
sandclock{
child{
g[male]{Johann Christian}
p[female]{Maria Katharina Bürmann}
child{
g[male]{Johann Christoffer}
p[female]{Ilse Marie Cords}
child{
g[male]{Johann Friedrich Christian}
p[female]{Anna Maria Kopp}
}
}
}
parent{
g[male]{Hans Meyer}
}
}
\end{genealogypicture}

\end{document}


g[pivot,male]{Some Name}