diff --git a/exampleSite/R/build.R b/exampleSite/R/build.R
index 78c3e56..2fbce83 100644
--- a/exampleSite/R/build.R
+++ b/exampleSite/R/build.R
@@ -1,3 +1,9 @@
+if (Sys.getenv('USER') != 'yihui' || Sys.which('git') == '' ||
+    !grepl(
+      'git@github.com:yihui/hugo-xmin.git',
+      system2('git', c('remote', '-v'), stdout = TRUE)
+    )) q('no')
+
 file.copy('content/_index.markdown', '../README.md', overwrite = TRUE)
 if (Sys.which('sed') != '') system("sed -i '' -e '1,6d' -e '34,38d' ../README.md")
 cat(