+ start_step ("Save tarball to Git");
+ run ("GIT_DIR=$topdir/.git $topdir/git-import-tar $tarball refs/builds/$build_number/dist", "git-dist");
+ set_var ("dist_ref", "refs/builds/$build_number/dist");
+ set_var ("dist_commit", ref_to_commit ("refs/builds/$build_number/dist"));
+