How can you push changes from one branch to another without switching?

Question

git

For example, I'm on branch v1, how can I merge changes from it or, more precisely, merge it with another local branch v2 without switching to v2?

Answer 1

# Merge local branch foo into local branch master,
# without having to checkout master first.
# Here `.` means to use the local repository as the "remote":
git fetch . foo:master

Answer 2

You can use worktree. Technically, you still switch to the branch, but in a different directory. Your working directory will remain untouched.