Update Tests/BuildTests/IncrementalBuildTests.swift

Co-authored-by: Max Desiatov <[email protected]>

Author: pusukuri

Tests/BuildTests/IncrementalBuildTests.swift

@@ -163,6 +163,7 @@ final class IncrementalBuildTests: XCTestCase {
                 environment: environment
             ).spm_chomp()
 
+            // Generate a new path to make sure the cache is not used and it's rebuilt again with same path.
             let newSdkPathStr = "/tmp/../\(sdkPathStr)"
             // Perform a full build again because SDK changed.
             let log1 = try executeSwiftBuild(fixturePath, env: ["SDKROOT": newSdkPathStr]).stdout