- Avoid duplication in the %build section for the pie ppc64 case.
Just use line continuation for the build cmdline and %ifnarch
ppc64 to enable pie mode on everything but ppc64

- Fix the rclone version update by properly setting the package
variable during the build

- added fix-nextcloud-chunked.patch:
The patch is a slightly modified version of
73d1b72bd759f838ad322b42e75111652eafe02e, which should give the
user more guidance to check the configuration.
This should fix https://github.com/rclone/rclone/issues/7103