flipflop97 [1] filed a orphan request for nautilus-git [2]:

The package needs maintainer action as the source has moved which makes the package unable to download source files. A comment from about a year ago has pointed this out and there seems to be no response nor action from the maintainer.

Next to this: It also contains non-existing dependencies that should be fixed.

[1] https://aur.archlinux.org/account/flipflop97/ [2] https://aur.archlinux.org/pkgbase/nautilus-git/