gnidmoo [1] filed a orphan request for cpr-git [2]:

This package is out of date since more than 4 months. Until https://github.com/whoshuu/cpr/pull/296 is merged, it could be nice to include a patch in the package to make it compile, and the maintainer doesn't seem active on that topic.

[1] https://aur.archlinux.org/account/gnidmoo/ [2] https://aur.archlinux.org/pkgbase/cpr-git/