It builds fine for f39 and f38 local builds, it fails for f38 koji and copr builders.
https://koji.fedoraproject.org/koji/taskinfo?taskID=101949820
Installed (but unpackaged) file(s) found:
/usr/share/themes/Mint-X-Aqua/index.theme
/usr/share/themes/Mint-X-Blue/index.theme
/usr/share/themes/Mint-X-Brown/index.theme
/usr/share/themes/Mint-X-Grey/index.theme
/usr/share/themes/Mint-X-Orange/index.theme
/usr/share/themes/Mint-X-Pink/index.theme
/usr/share/themes/Mint-X-Purple/index.theme
/usr/share/themes/Mint-X-Red/index.theme
/usr/share/themes/Mint-X-Sand/index.theme
/usr/share/themes/Mint-X-Teal/index.theme
Child return code was: 1
This line in %files should cover it.
https://src.fedoraproject.org/rpms/mint-themes/blob/rawhide/f/mint-themes...