developer.md - add gitbox.apache.org clone option
diff --git a/content/pages/core/developer.md b/content/pages/core/developer.md
index be4a79a..e60e3b1 100644
--- a/content/pages/core/developer.md
+++ b/content/pages/core/developer.md
@@ -8,7 +8,7 @@
 The source files are stored using GIT (see https://git-scm.com/documentation)
 
 - Latest **main**:
-`git clone https://github.com/apache/lucene.git`
+`git clone https://github.com/apache/lucene.git` or `git clone https://gitbox.apache.org/repos/asf/lucene.git`
   
 ## Making a Contribution
 Lucene Java is always looking for contributions. See the [Wiki][1] for details on contributing.