We don't ignore hooks from closed PRs until we're validating. We can actually just dispose of the hook when we receive it. This is particularly relevant when landing a git-svn change.
<rdar://problem/88091611>
I also filed Bug 235577 for this thing. Can probably dupe one of these.
Landed 246465@main (r288657)
*** Bug 235577 has been marked as a duplicate of this bug. ***