Question on git merge patch

[Huang, FrankR]

Hi, 
	I have a question to ask you guys.
	For example:
	
http://cgit.freedesktop.org/~airlied/linux/commit/drivers/gpu/drm/radeon
/evergreen.c?id=f7eb0c55416aba7478932cedbaccc2bdacd8a95d
	There merge has two parents and two diff. I want to ask the
second diff:
	
http://cgit.freedesktop.org/~airlied/linux/diff/drivers/gpu/drm/radeon/e
vergreen.c?id=f7eb0c55416aba7478932cedbaccc2bdacd8a95d&id2=439bd6cde45d0
bff4f97513b01b976b9f72ae1f0
	Does it come from branch drm-radeon-fusion? If that is so, is it
a local branch? Because I can not access a branch named
drm-radeon-fusion. How could I find this patch's log?

Thanks,
Frank