maven-plugins: Error creating blob: cannot retry due to server authentication, in streaming mode

OK I give up.

[ERROR] Failed to execute goal com.github.github:site-maven-plugin:0.7:site (default) on project morphia-parent: Error creating blob: cannot retry due to server authentication, in streaming mode -> [Help 1]

From the pom:

<distributionManagement>
    <site>
        <id>github</id>
        <url>scm:git:ssh://git@github.com/jmkgreen/morphia.git</url>
    </site>
</distributionManagement>

<scm>
    <connection>scm:git:git@github.com:jmkgreen/morphia.git</connection>
    <developerConnection>scm:git:git@github.com:jmkgreen/morphia.git</developerConnection>
    <url>https://github.com/jmkgreen/morphia</url>
  <tag>HEAD</tag>

</scm>

            <plugin>
                <groupId>com.github.github</groupId>
                <artifactId>site-maven-plugin</artifactId>
                <version>0.7</version>
            </plugin>


                <plugin>
                    <groupId>com.github.github</groupId>
                    <artifactId>site-maven-plugin</artifactId>
                    <configuration>
                        <message>Creating site for ${project.version}</message>
                    </configuration>
                    <executions>
                        <execution>
                            <goals>
                                <goal>site</goal>
                            </goals>
                            <phase>site</phase>
                        </execution>
                    </executions>
                </plugin>

Any ideas? Having to remove it to make a release so not a good position to be in.