moving changed files to another branch for check-in

git stash is your friend.

If you have not made the commit yet, just run git stash. This will save away all of your changes.

Switch to the branch you want the changes on and run git stash pop.

There are lots of uses for git stash. This is certainly one of the more useful reasons.

An example:

# work on some code
git stash
git checkout correct-branch
git stash pop

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Update: No need to use stash command. uncommitted changes do not belong to any branch so just use git checkout -b <new-branch>

If you haven't already committed your changes, just use git checkout to move to the new branch and then commit them normally - changes to files are not tied to a particular branch until you commit them.

If you have already committed your changes:

1. Type git log and remember the SHA of the commit you want to move.
2. Check out the branch you want to move the commit to.
3. Type git cherry-pick SHA substituting the SHA from above.
4. Switch back to your original branch.
5. Use git reset HEAD~1 to reset back before your wrong-branch commit.

cherry-pick takes a given commit and applies it to the currently checked-out head, thus allowing you to copy the commit over to a new branch.