How to move a branch backwards in git?
Solution 1:
Use the reset subcommand:
git checkout A
git reset --hard B
git push --force github
As a sidenote, you should be careful when using git reset while a branch has been pushed elsewhere already. This may cause trouble to those who have already checked out your changes.
Solution 2:
If there are no commits on branch A, then the git reset --hard B solution given by Bram Schoenmakers will work.
However if there are commits are branch A which must be preserved, then the following should do the trick:
- Make a backup copy of your repo (just in case)
git checkout Agit rebase -i --onto B SHA1-A^
...where SHA1-A^ is the commit id of the parent of your branch A
See the git rebase man page for details.
NOTE: This will rewrite history (as rebase always does). Special consideration should be made if your A branch was ever pushed to a public repo.