Fixes [YOCTO #8542]
I updated the description with a new example specific to Git.
When you use Git, you have to specifically set the S directory
for things to work.
(From yocto-docs rev: 10d71ccda461098fd8c94677d91fd261f6edf508)
Signed-off-by: Scott Rifenbark <srifenbark@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>