On Mon, Dec 24, 2012 at 11:09 AM, Seth Robertson <in-gitv...@baka.org> wrote:
> In message <20121224035825.GA17203@zuhnb712>, Woody Wu writes:
>     How can I find out what's the staring reference point (a commit number
>     or tag name) of a locally created branch? I can use gitk to find out it
>     but this method is slow, I think there might be a command line to do it
>     quickly.
> The answer is more complex than you probably suspected.
> Technically, `git log --oneline mybranch | tail -n 1` will tell you
> the starting point of any branch.  But...I'm sure that isn't what you
> want to know.
> You want to know "what commit was I at when I typed `git branch
> mybranch`"?  The problem is git doesn't record this information and
> doesn't have the slightest clue.

Maybe we should store this information. reflog is a perfect place for
this, I think. If this information is reliably available, git rebase
can be told to "rebase my whole branch" instead of my choosing the
base commit for it.
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