Re: switching upstream tips

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2009/5/13 Ittay Dror <ittay.dror@xxxxxxxxx>:
> I'm working on a repository in github that is forked from another
> repository. I've committed several times and pulled (merged) from the
> upstream a few times (so the committs are interleaved). The upstream
> repository is a clone of an SVN repository (in apache). The project has
> switched svn repositories (moved from incubation to top level project) and
> so created a new repository in github.

That's evil.

> * Reorder my history so that my commits are on top of the tip of the old
> upstream repository.

Look at "git rebase -i" (interactive rebase)

> * Change the upstream repository reference so it points to the new
> repository

Just edit your .git/config and re-fetch.

> * Apply my commits on top of the new upstream repository

You can try to cherry-pick your commits (git cherry-pick).
Maybe rename detection will be enough to apply your changes
as is. But as far as I understand, the path names in the new
upstream are now all different (moved a level up?).
You can save your commits in a mbox:

   git format-patch -o mbox old-upstream..your-last-commit

Edit the paths in the mbox and try to apply the result:

   git am -3 result.mbox

Or, you can use git filter-branch to modify the old history as if it
was always operating on the directory structure of the new
upsteam (assuming it is possible, of course). See manpage
of git filter-branch, there is an example (look for "move the whole
tree into a subdirectory").
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