Re: [PATCH 3/3] builtin/checkout: DWIM with -f -b

On Sun, Jun 20, 2010 at 02:10:32PM -0700, Junio C Hamano wrote:

FWIW, I often end up doing this when rebuilding 'pu' (and 'jch' that is
used internally that keeps a version of 'next' with cleaner history).

    ... a script to regenerate jch on top of master (and pu on jch)
    $ Meta/Reintegrate master..jch >Meta/redo-jch.sh
    $ Meta/Reintegrate jch..pu >Meta/redo-pu.sh

    ... rewind and rebuild jch on top of updated master
    $ git checkout -f -b jch master
    ... error ... oops
    $ git branch -f jch master
    $ git checkout jch
    $ Meta/redo-jch.sh
    $ git diff next
    ... no output---good.

I'm certainly sympathetic, but as I understand it, with this new patch
you are doing the equivalent of:

  git branch -f jch master
  git checkout -f jch

which is different than what you wrote above.  For your workflow, I
doubt it matters, but it is potentially destructive.

-Peff