``` if ( !gradle.includedBuilds.isEmpty() ) { ...

# gradle

[xenoterracide]

if ( !gradle.includedBuilds.isEmpty() ) {
    task("build", {
        dependsOn(gradle.includedBuild("is").task(":build"))
        dependsOn(gradle.includedBuild("sec").task(":build"))
    })
}
else {
    task( "build", {
        dependsOn("gitClone")
    })
}

works, I guess