【Unity】BuildOptions.CleanBuildCache を使うと Clean Build できる

概要

var options = new BuildPlayerOptions
{
    scenes           = EditorBuildSettings.scenes.Select( x => x.path ).ToArray(),
    locationPathName = "app.apk",
    target           = BuildTarget.Android,
    options          = BuildOptions.CleanBuildCache
};

var buildReport = BuildPipeline.BuildPlayer( options );

参考サイト様