.orElse(providerFactory.systemProperty("tests.bwc.refspec." + bwcBranch))
                    .getOrElse(remote.get() + "/" + bwcBranch);

                String effectiveRefSpec = maybeAlignedRefSpec(logger, refspec);

                logger.lifecycle("Performing checkout of {}...", refspec);
                LoggedExec.exec(execOperations, spec -> {
                    spec.workingDir(checkoutDir);