I'd say it's a mirroring issue, but:
[torvalds@woody linux]$ git ls-remote ssh://master.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip.git | grep x86/urgent
b9d2252c1e44fa83a4e65fdc9eb93db6297c55af refs/heads/x86/urgent
b9d2252c1e44fa83a4e65fdc9eb93db6297c55af refs/heads/x86/urgent-undo-ioapic
41b7aafd3ea22fcd6cbb062da39d5c757d6c09ca refs/remotes/origin/x86/urgent
ie it looks like even master has b9d2252c1 as tip (which is the one you
say is the parent).
I wonder if Ingo overwrote it. You both push to the same tree, don't you?
And maybe somebody used "-f" to force an over-push?
Linus
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