Commit: ff2a81282b81 ("net/tcp: Fix a NULL pointer dereference when using TCP-AO with TCP_REPAIR.")
	Fixes tag: Fixes: 7c2ffaf ("net/tcp: Calculate TCP-AO traffic keys")
	Has these problem(s):
		- SHA1 should be at least 12 digits long
		  Can be fixed by setting core.abbrev to 12 (or more) or (for git v2.11
		  or later) just making sure it is not set (or set to "auto").