Re: Rebasing cascading topic trees

> I currently have a situation with cascading topic branches that I need to rebase
> regularly.  In the picture below, I want to rebase the tree starting with `E` to
> be rebased onto master (my actually cascade is 4 branches deep).
>
> A--B--C--D (master)
>    \
>     E--F (topic1)
>        \
>         G--H (topic2)
>
> After running `git rebase --onto master master topic1`, I end up with
>
> A--B--C--D (master)
>    |     \
>    \      E'--F' (topic1)
>     E--F
>        \
>         G--H (topic2)
>
> I then need to also run `git rebase --onto topic1 F topic2` to arrive at the
> desired
>
> A--B--C--D (master)
>    |     \
>    \      E'--F' (topic1)
>     E--F      \
>        |       G'--H' (topic2)
>        \
>         G--H
>
> Problem here is that I don't have a nice symbolic name for `F` anymore after the
> first rebase. Rebasing `topic2` first is not really possible, because I do not
> have a new graft-point yet.  I currently write down `F` ahead of time (or use
> `reflog` if I forgot) `F`, but I wonder if there is a better solution.