https://github.com/systemd/systemd/blob/6aa8d43ade72e24c9426e604f7fc4b7582b9db7c/NEWS#L72-L73

moved service files back to forking because the previous change does not behave well

FTR, commands used to change arch=() and then verify the changes:

$ sed -Ei "/^arch=/{s/ *?['\"]?i686['\"]? *?//;s/ *$//}" */*/PKGBUILD*

$ grep -r i686 * | grep arch= | grep -v repos

$ svn diff | grep -A 1 ^-[^-] | grep -v -- -- | cut -c2- |
  while IFS=$'\n' read -r l1; IFS=$'\n' read -r l2; do
    echo "$l1 -> $l2"
  done | sort -u

update for FS#38991 ; add support for g15