git-checkout

Switch to branch

$ git checkout [branch-name]

$ git checkout -b [new-branch]

$ git checkout -- [file.txt]

$ git checkout [commit-hash]

$ git checkout -t origin/[branch]

git checkout [options] branch|commit|file

git checkout switches branches or restores files. It updates the working tree to match the specified branch, commit, or file version from history.
The command serves multiple purposes: branch switching, branch creation, file restoration, and detached HEAD operations. Modern git prefers git switch for branches and git restore for files.
git checkout remains widely used for its versatility.

BRANCH

Branch to switch to.

Create and switch to new branch.

Set up tracking for remote branch.

Restore file from index.

Force switch, discard changes.

Create orphan branch.

Display help information.

Uncommitted changes may be lost with -f. Detached HEAD requires care. Consider git switch/restore for clarity.

git checkout is an original Git command that combines several operations. Git 2.23 introduced git switch and git restore as clearer alternatives.

git-switch(1), git-restore(1), git-branch(1)