use master branch instead of HEAD
diff --git a/pom.xml b/pom.xml
index 1fcc7da..cf84f8b 100644
--- a/pom.xml
+++ b/pom.xml
@@ -51,7 +51,7 @@
<connection>scm:git:https://gitbox.apache.org/repos/asf/maven-doxia-sitetools.git</connection>
<developerConnection>scm:git:https://gitbox.apache.org/repos/asf/maven-doxia-sitetools.git</developerConnection>
<url>https://github.com/apache/maven-doxia-sitetools/tree/${project.scm.tag}</url>
- <tag>HEAD</tag>
+ <tag>master</tag>
</scm>
<issueManagement>
<system>jira</system>