To keep the local git branch in sync with the remote main branch first, you need to get the latest commits from the remote main branch.
Note: main is the new name for master branches if you are using Github 🌟.
So first, If you are in the branch where you want the latest commits. Then you need to change to your local main branch. This can be done using this command,
git checkout main
Then you need to pull or get the latest commits from the remote main branch. This can be achieved using this command,
git pull main
After that, you can change to the branch you need to sync the main branch using this command,
git checkout your_branch_name
Then all you have to do is merge the latest commits from the main branch we just fetched.
This can be done using this command,
git merge main
That's it. You are done.