How to change the starting point of a branch?

Question

Usually I create a branch by running a command like git checkout -b [branch-name] [starting-branch]. In one case, I forgot to include the starting-branch

Answer 1

If you don't have commits in the new branch, using a 'git reset --hard' is the easier.

If you have commits in the new branch...

If your branch start on an older commit that you want to, just do a 'git rebase'.

If, more unlikely, your branch start on a newer commit or on a completely different branch, use a 'git rebase --onto'