\input{common.tex}
\begin{document}
\begin{tikzpicture}[main]
    \boundingbox
    \usualsetup
    \newcommit f0cec (F) -> E;
    \oldbranch master -> E;
    \branch master -> F;
    \branch maint -> A;
    \oldHEAD -> old master;
    \HEAD -> master;

    \node [cmd] at (0, 3.75) {git commit};

    \path [line]
        (index) edge [bend right=20] (F)
        (old HEAD) edge [dashed, bend left=50] (HEAD)
        ;

\end{tikzpicture}
\end{document}