Hidden at the end of the changelog is the addition of the the new config entry: "core.hooksPath" which lets you specify globally or per repository where hooks should point to.
In the Git-hooks project we have been using the init.templatedir which this replaces (as it is better), but for those that can't upgrade to 2.9 you can use init.templatedir and some variation of what Git-Hooks does to obtain similar results.
https://github.com/icefox/git-hooks/blob/master/git-hooks#L1...