git clone failing occassionally

gistfile1.txt

SimpleGit: checking out
Clear Workspace enabled: deleting contents of /jenkins/workspace/Commit_pr.
	- Executing: `/usr/bin/git clone git+ssh://[email protected]/attask .`
hudson.util.IOException2: remote file operation failed: /jenkins/workspace/Commit_pr at hudson.remoting.Channel@4274d50:commit-853
	at hudson.FilePath.act(FilePath.java:901)
	at hudson.FilePath.act(FilePath.java:878)
	at com.joelj.jenkins.Git.executeCommand(Git.java:69)
	at com.joelj.jenkins.Git.cloneRepo(Git.java:61)
	at com.joelj.jenkins.SimpleGitScm.checkout(SimpleGitScm.java:88)
	at hudson.model.AbstractProject.checkout(AbstractProject.java:1369)
	at hudson.model.AbstractBuild$AbstractBuildExecution.defaultCheckout(AbstractBuild.java:676)
	at jenkins.scm.SCMCheckoutStrategy.checkout(SCMCheckoutStrategy.java:88)
	at hudson.model.AbstractBuild$AbstractBuildExecution.run(AbstractBuild.java:581)
	at hudson.model.Run.execute(Run.java:1576)
	at hudson.model.FreeStyleBuild.run(FreeStyleBuild.java:46)
	at hudson.model.ResourceController.execute(ResourceController.java:88)
	at hudson.model.Executor.run(Executor.java:241)
Caused by: com.joelj.jenkins.GitException: Git exited with a value of: 128. Initialized empty Git repository in /jenkins/workspace/Commit_pr/.git/
error: unable to write sha1 filename /jenkins/workspace/Commit_pr/.git/objects/pack/pack-e0551853d63895dbf76daae35fd3d69bd51b95a1.pack: No such file or directory

fatal: cannot store pack file
fatal: index-pack failed
	at com.joelj.jenkins.Git$GitFileCallable.invoke(Git.java:140)
	at com.joelj.jenkins.Git$GitFileCallable.invoke(Git.java:110)
	at hudson.FilePath$FileCallableWrapper.call(FilePath.java:2388)
	at hudson.remoting.UserRequest.perform(UserRequest.java:118)
	at hudson.remoting.UserRequest.perform(UserRequest.java:48)
	at hudson.remoting.Request$2.run(Request.java:326)
	at hudson.remoting.InterceptingExecutorService$1.call(InterceptingExecutorService.java:72)
	at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:334)
	at java.util.concurrent.FutureTask.run(FutureTask.java:166)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
	at java.lang.Thread.run(Thread.java:724)