aurutils: Cannot install git package - 'Stopping at filesystem boundary'

I’m trying to install the package ttf-google-fonts-git, and everytime I do I get the following output:

$ aursync --chroot --temp --update ttf-google-fonts-git

  -> Using [custom] repository
==> Resolving dependencies...
  -> ttf-google-fonts-git 0 -> 1:r1212.a16b8302-4
  -> ttf-merriweather 0 -> 1:2.002-2
  -> ttf-merriweather-sans 0 -> 1.006-4
  -> ttf-oswald 0 -> 4.100-2
  -> ttf-quintessential 0 -> 1.001-4
  -> ttf-signika 0 -> 1.002-2
==> Retrieving build files...
fatal: Not a git repository (or any parent up to mount point /home/john)
Stopping at filesystem boundary (GIT_DISCOVERY_ACROSS_FILESYSTEM not set). 

I have tried removing it from the database and reinstalling but I get the same output. I was able to install it before so I’m not sure what the problem is.