`git checkout -m <branchname>`

Switch to a different branch and merge changes

This command allows you to switch to a different branch and merge any changes from the current branch to the target branch.

The -m flag is short for --merge and indicates that the changes should be merged instead of creating a new branch.

Related commands

`git checkout -b <branchname>`

`git checkout -b <branchname1> <remote>/<branchname2>`

`git checkout <branchname>`

`git checkout -`

`git checkout --<pathname>`

`git checkout HEAD <pathname>`

`git checkout --ours <pathname>`

`git checkout --theirs <pathname>`

`git checkout <commit> -- <pathname>`

`git checkout --orphan <branchname>`

`git checkout -b <branchname> <commit>`

`git checkout -t <remote>/<branchname>`