given. Set it to `always` if you want this behavior when the
start-point is either a local or remote branch.
+
-If no '-b' option was given, a name will be made up for you, by stripping
-the part up to the first slash of the tracked branch. For example, if you
-called 'git checkout --track origin/next', the branch name will be 'next'.
+If no '-b' option was given, the name of the new branch will be
+derived from the remote branch, by attempting to guess the name
+of the branch on remote system. If "remotes/" or "refs/remotes/"
+are prefixed, it is stripped away, and then the part up to the
+next slash (which would be the nickname of the remote) is removed.
+This would tell us to use "hack" as the local branch when branching
+off of "origin/hack" (or "remotes/origin/hack", or even
+"refs/remotes/origin/hack"). If the given name has no slash, or the above
+guessing results in an empty name, the guessing is aborted. You can
+exlicitly give a name with '-b' in such a case.
--no-track::
Ignore the branch.autosetupmerge configuration variable.