insteadOf git.kernel.org

Surprisingly long maintenance downtime for kernel.org
(and especially git.kernel.org) gave me a chance to learn
git insteadOf trick. I already have replaced a couple of URLs,
for example:
[url "https://github.com/torvalds/linux.git"]
        insteadOf = git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6.git

But the real power comes with something like this:

[url "git://readonly.mysuperproject.org"]
    insteadOf = "git://mysuperproject.org"
[url "ssh://gurusonly.mysuperproject.org"]
    pushInsteadOf = "git://mysuperproject.org"