Maven build failure

while building pom.xml, iam getting the below error,

Error stacktraces are turned on.
[INFO] Scanning for projects...
[INFO] Reactor build order:
[INFO] Ivory
[INFO] Ivory CLI client
[INFO] Ivory Metrics
[INFO] Ivory Test Utility
[INFO] Ivory Commons
[INFO] Ivory Messaging
[INFO] Ivory Oozie Adaptor
[INFO] Ivory Feed
[INFO] Ivory Process
[INFO] Ivory Acquisition
[INFO] Ivory Replication
[INFO] Ivory Retention
[INFO] Ivory Archival
[INFO] Ivory Rerun
[INFO] Ivory Prism
[INFO] Ivory Web Application
[INFO] ------------------------------------------------------------------------
[INFO] Building Ivory
[INFO] task-segment: [clean, package]
[INFO] ------------------------------------------------------------------------
[INFO] [clean:clean {execution: default-clean}]
[INFO] [buildnumber:create {execution: default}]
[INFO] Checking for local modifications: skipped.
[INFO] Updating project files from SCM: skipped.
[INFO] Executing: /bin/sh -c cd /home/naveen/Desktop/Ivory-master && git show
[INFO] Working directory: /home/naveen/Desktop/Ivory-master
[INFO] ------------------------------------------------------------------------
[ERROR] BUILD ERROR
[INFO] ------------------------------------------------------------------------
[INFO] Cannot get the revision information from the scm repository :
Exception while executing SCM command.

[INFO] ------------------------------------------------------------------------
[INFO] Trace
org.apache.maven.lifecycle.LifecycleExecutionException: Cannot get the revision information from the scm repository :
Exception while executing SCM command.
at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoals(DefaultLifecycleExecutor.java:719)
at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoalWithLifecycle(DefaultLifecycleExecutor.java:556)
at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoal(DefaultLifecycleExecutor.java:535)
at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoalAndHandleFailures(DefaultLifecycleExecutor.java:387)
at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeTaskSegments(DefaultLifecycleExecutor.java:348)
at org.apache.maven.lifecycle.DefaultLifecycleExecutor.execute(DefaultLifecycleExecutor.java:180)
at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:328)
at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:138)
at org.apache.maven.cli.MavenCli.main(MavenCli.java:362)
at org.apache.maven.cli.compat.CompatibleMain.main(CompatibleMain.java:60)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.codehaus.classworlds.Launcher.launchEnhanced(Launcher.java:315)
at org.codehaus.classworlds.Launcher.launch(Launcher.java:255)
at org.codehaus.classworlds.Launcher.mainWithExitCode(Launcher.java:430)
at org.codehaus.classworlds.Launcher.main(Launcher.java:375)
Caused by: org.apache.maven.plugin.MojoExecutionException: Cannot get the revision information from the scm repository :
Exception while executing SCM command.
at org.codehaus.mojo.build.CreateMojo.getRevision(CreateMojo.java:727)
at org.codehaus.mojo.build.CreateMojo.execute(CreateMojo.java:443)
at org.apache.maven.plugin.DefaultPluginManager.executeMojo(DefaultPluginManager.java:490)
at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoals(DefaultLifecycleExecutor.java:694)
... 17 more
Caused by: org.apache.maven.scm.ScmException: Exception while executing SCM command.
at org.apache.maven.scm.command.AbstractCommand.execute(AbstractCommand.java:63)
at org.apache.maven.scm.provider.git.AbstractGitScmProvider.executeCommand(AbstractGitScmProvider.java:290)
at org.apache.maven.scm.provider.git.AbstractGitScmProvider.info(AbstractGitScmProvider.java:311)
at org.codehaus.mojo.build.CreateMojo.info(CreateMojo.java:747)
at org.codehaus.mojo.build.CreateMojo.getRevision(CreateMojo.java:694)
... 20 more
Caused by: java.lang.UnsupportedOperationException
at org.apache.maven.scm.provider.git.gitexe.command.info.GitInfoCommand.executeCommand(GitInfoCommand.java:56)
at org.apache.maven.scm.command.AbstractCommand.execute(AbstractCommand.java:59)
... 24 more