Posted By: Anonymous
I’ve done a fair bit of work (“Your branch is ahead of ‘origin/master’ by 37 commits.”) which really should have gone into its own branch rather than into
master. These commits only exist on my local machine and have not been pushed to
origin, but the situation is complicated somewhat in that other devs have been pushing to
origin/master and I’ve pulled those changes.
How do I retroactively move my 37 local commits onto a new branch? Based on the docs, it appears that
git rebase --onto my-new-branch master or
...origin/master should do this, but both just give me the error “fatal: Needed a single revision”.
man git-rebase says nothing about providing a revision to
rebase and its examples do not do so, so I have no idea how to resolve this error.
(Note that this is not a duplicate of Move existing, uncommited work to a new branch in Git or How to merge my local uncommitted changes into another Git branch? as those questions deal with uncommitted changes in the local working tree, not changes which have been committed locally.)
This should be fine, since you haven’t pushed your commits anywhere else yet, and you’re free to rewrite the history of your branch after
origin/master. First I would run a
git fetch origin to make sure that
origin/master is up to date. Assuming that you’re currently on
master, you should be able to do:
git rebase origin/master
… which will replay all of your commits that aren’t in
origin/master. The default action of rebase is to ignore merge commits (e.g. those that your
git pulls probably introduced) and it’ll just try to apply the patch introduced by each of your commits onto
origin/master. (You may have to resolve some conflicts along the way.) Then you can create your new branch based on the result:
git branch new-work
… and then reset your
master back to
# Use with care - make sure "git status" is clean and you're still on master: git reset --hard origin/master
When doing this kind of manipulating branches with
git reset, etc. I find it useful to frequently look at the commit graph with
gitk --all or a similar tool, just to check that I understand where all the different refs are pointing.
Alternatively, you could have just created a topic branch based on where your master is at in the first place (
git branch new-work-including-merges) and then reset
master as above. However, since your topic branch will include merges from
origin/master and you’ve not pushed your changes yet, I’d suggest doing a rebase so that the history is tidier. (Also, when you eventually merge your topic branch back to master, the changes will be more obvious.)