Can I merge two branches when I am in another branch?

Question

Suppose I am in branch A. How can I merge branches B and C without checking out another branch?

Can I use this command? git merge B C

Answer 1

Nope.... you can't. For these cases, you can use temporarily a new worktree:

git worktree add blahblah B
cd blahblah
git merge C
cd ..
git worktree remove blahblah