[git] Git merge two local branches

I have branch Master, branchA and branchB. Now I'm working in the branchA and I need to merge branchA with branchB and proceed my work in the branchA. All files are comitted in the branchA and branchB.

What's the fast way to implement it?

Here's a clear picture:

Assuming we have branch-A and branch-B

We want to merge branch-B into branch-A

on branch-B -> A: switch to branch-A

on branch-A: git merge branch-B

If you or another dev will not work on branchB further, I think it's better to keep commits in order to make reverts without headaches. So ;

git checkout branchA
git pull --rebase branchB

It's important that branchB shouldn't be used anymore.

For more ; https://www.derekgourlay.com/blog/git-when-to-merge-vs-when-to-rebase/

For merging first branch to second one:

on first branch: git merge secondBranch

on second branch: Move to first branch-> git checkout firstBranch-> git merge secondBranch

on branchB do $git checkout branchA to switch to branch A

on branchA do $git merge branchB

That's all you need.

The answer from the Abiraman was absolutely correct. However, for newbies to git, they might forget to pull the repository. Whenever you want to do a merge from branchB into branchA. First checkout and take pull from branchB (Make sure that, your branch is updated with remote branch)

git checkout branchB

git pull

Now you local branchB is updated with remote branchB Now you can checkout to branchA

git checkout branchA

Now you are in branchA, then you can merge with branchB using following command

git merge branchB