Most of this is derived from Dan Golden's E-Mail to me on
perl5-porters with the subject "[PATCH] Add comments to gv.c about
variable implementation" where I'd submitted a patch without using a
topic branch.
% git branch orange
% git checkout orange
+Creating a topic branch makes it easier for the maintainers to rebase
+or merge back into the master blead for a more linear history. If you
+don't work on a topic branch the maintainer has to manually cherry
+pick your changes onto blead before they can be applied.
+
+That'll get you scolded on perl5-porters, so don't do that. Be
+Awesome.
+
Then make your changes. For example, if Leon Brocard changes his name
to Orange Brocard, we should change his name in the AUTHORS file: