git - Reset other branch to current without a checkout

Question

I'm writing some scripts for my Git workflow.

I need to reset other (existing) branch to the current one, without checkout.

Before:

 CurrentBranch: commit A
 OtherBranch: commit B

After:

 CurrentBranch: commit A
 OtherBranch: commit A

Equivalent of

 $ git checkout otherbranch 
 $ git reset --soft currentbranch
 $ git checkout currentbranch

(Note --soft: I do not want to affect working tree.)

Is this possible?

Answer 1

Set otherbranch to point at the same commit as currentbranch by running

git branch -f otherbranch currentbranch

The -f (force) option tells git branch yes, I really mean to overwrite any existing otherbranch reference with the new one.

From the documentation:

-f
--force

Reset to if exists already. Without -f git branch refuses to change an existing branch.