git clone <repo>
clone the repository specified by <repo>; this is similar to "checkout" in
some other version control systems such as Subversion and CVS
git branch
list all branches
git branch <branch>
create a new branch named <branch>, referencing the same point in history as
the current branch
git branch <branch> <start-point>
create a new branch named <branch>, referencing <start-point>, which may be
specified any way you like, including using a branch name or a tag name
git branch -d <branch>
delete the branch <branch>; if the branch you are deleting points to a commit
which is not reachable from the current branch, this command will fail with a
warning.
git branch -D <branch>
even if the branch points to a commit not reachable from the current branch,
you may know that that commit is still reachable from some other branch or
tag. In that case it is safe to use this command to force git to delete the
branch.
git checkout <branch>
make the current branch <branch>, updating the working directory to reflect
the version referenced by <branch>
git checkout -b <new> <start-point>
create a new branch <new> referencing <start-point>, and check it out.
