HTRACE-64 Fix mvn clean of go directories
diff --git a/htrace-core/pom.xml b/htrace-core/pom.xml
index 2c2b85e..86bc920 100644
--- a/htrace-core/pom.xml
+++ b/htrace-core/pom.xml
@@ -114,9 +114,10 @@
                   <arg value="-c"/>
                   <arg value="./gobuild.sh clean"/>
                 </exec>
-                <exec executable="bash" failonerror="true" dir="${basedir}/src/go">
-                  <arg value="-c"/>
-                  <arg value="rm -f ./bin/*"/>
+                <exec executable="git" failonerror="true" dir="${basedir}/src/go">
+                  <arg value="clean"/>
+                  <arg value="-ffqdx"/>
+                  <arg value="."/>
                 </exec>
               </tasks>
             </configuration>