How can I know if a branch has been already merged into master?

Question

I have a git repository with multiple branches.

How can I know which branches are already merged into the master branch?

Answer 1

Step 1: First, switch to your master branch

$ git checkout master

Step 2: Now, take all the commits from the bugfix branch and merges it with your current branch

$ git merge --squash bugfix

Step 3: Create a single commit from the merged changes

$ git commit

You must be wondering there should be an -m parameter, well omitting the -m parameter lets you modify a draft commit message containing every message from your squashed commits before finalizing your commit.