[mojo-user] buildnumber-maven-plugin:1.0:create with git

[Jeff Adamson]

Hello,
  I would like to use the buildnumber-maven-plugin with a git repository.
Specifically, to embed the git revision in the manifest and/or version
number.  how do I configure the plugin so that it can accomplish this.

I tried both
      <plugin>
        <groupId>org.codehaus.mojo</groupId>
        <artifactId>buildnumber-maven-plugin</artifactId>
        <version>1.0</version>
      </plugin>
and the full example from the create-mojo.html page
which results in
    [ERROR] Failed to execute goal
org.codehaus.mojo:buildnumber-maven-plugin:1.0:create (default-cli) on
project <>: Execution default-cli of goal
org.codehaus.mojo:buildnumber-maven-plugin:1.0:create failed: The scm url
cannot be null. -> [Help 1]

I found on the main pages for the buildnumber plugin
http://mojo.codehaus.org/buildnumber-maven-plugin/create-mojo.html and
http://mojo.codehaus.org/buildnumber-maven-plugin/usage.html, but they do
not explain how to use it with git or why it seams to want an scm url and
can't find that info itself from the workspace )

Can someone explain to me what options I need to set on this plugin and/or
point me to an example pom.xml using this plugin with git?

Thanks

--Jeff