Can't build from 2.4.rc2 distribution tarball

[apjanke]

I can't get git-multipush to build from the latest dev release tarball, v2.4.rc2.

$ ls
git-multipush-v2.4.rc2.tar.gz
[~/tmp/multipush]
$ tar xf git-multipush-v2.4.rc2.tar.gz
[~/tmp/multipush]
$ cd git-multipush-git-multipush-v2.4.rc2
[~/tmp/multipush/git-multipush-git-multipush-v2.4.rc2]
$ make
fatal: Not a git repository (or any of the parent directories): .git
make: *** No rule to make target `VERSION', needed by `git-multipush'.  Stop.
[✘ ~/tmp/multipush/git-multipush-git-multipush-v2.4.rc2]
$

It looks like it doesn't include a version file, so requires it to be a git repo, which isn't the case if you grab the tarball instead of cloning the repo.

This is on OS X 10.9.5.

Found this when working on the Homebrew formula for it: Homebrew/legacy-homebrew#50530.

Could this be fixed so it can build from the RC distribution files?