standard output, instead of saving them into a file per
patch and implies --mbox.
+git-format-patch -k --stdout R1..R2 | git-am -3 -k::
+ Extract commits between revisions R1 and R2, and apply
+ them on top of the current branch using `git-am` to
+ Extract commits the current branch accumulated since it
+ pulled from origin the last time in a patch form for
Written by Junio C Hamano <email@example.com>