Anyone seem this issue before?
Jenkins ver. 1.565.3
GIT client plugin - 1.17.1
Git plugin - 2.2.12
GitHub plugin - 1.11.3
GitHub pull request builder - 1.20
GitHub API plugin - 1.67

Failed to connect to repository : Command "git -c core.askpass=true ls-remote -h git@github.com:xxxxxxxxxxxxxxxxxx.git HEAD" returned status code 128:
stdout:
stderr: fatal: failed to stat '.': Permission denied

— here's the git pollling log —
Started on Jul 13, 2015 3:01:00 PM
Using strategy: Default
[poll] Last Built Revision: Revision ad1ddc6a848d6353c52bb1e3112bcff58a9c68e0 (refs/remotes/xxxxxx/master)
> git --version # timeout=10
> git -c core.askpass=true ls-remote -h git@github.com:xxxxxxxxxxxxxxxxxxxxx.git master # timeout=10
FATAL: hudson.plugins.git.GitException: Command "git -c core.askpass=true ls-remote -h git@github.com:xxxxxxxxxxxxxxxxxxxxx.git master" returned status code 128:
stdout:
stderr: fatal: failed to stat '.': Permission denied

hudson.util.IOException2: hudson.plugins.git.GitException: Command "git -c core.askpass=true ls-remote -h git@github.com:xxxxxxxxxxxxxxxxxxxxx.git master" returned status code 128:
stdout:
stderr: fatal: failed to stat '.': Permission denied

at hudson.plugins.git.GitSCM.compareRemoteRevisionWith(GitSCM.java:496)
at hudson.scm.SCM._compareRemoteRevisionWith(SCM.java:357)
at hudson.scm.SCM.poll(SCM.java:374)
at hudson.model.AbstractProject._poll(AbstractProject.java:1428)
at hudson.model.AbstractProject.poll(AbstractProject.java:1331)
at hudson.triggers.SCMTrigger$Runner.runPolling(SCMTrigger.java:477)
at hudson.triggers.SCMTrigger$Runner.run(SCMTrigger.java:506)
at hudson.util.SequentialExecutionQueue$QueueEntry.run(SequentialExecutionQueue.java:118)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
at java.util.concurrent.FutureTask.run(FutureTask.java:262)
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:744)
Caused by: hudson.plugins.git.GitException: Command "git -c core.askpass=true ls-remote -h git@github.com:xxxxxxxxxxxxxxxxxxxxx.git master" returned status code 128:
stdout:
stderr: fatal: failed to stat '.': Permission denied

at org.jenkinsci.plugins.gitclient.CliGitAPIImpl.launchCommandIn(CliGitAPIImpl.java:1591)
at org.jenkinsci.plugins.gitclient.CliGitAPIImpl.launchCommandWithCredentials(CliGitAPIImpl.java:1379)
at org.jenkinsci.plugins.gitclient.CliGitAPIImpl.launchCommandWithCredentials(CliGitAPIImpl.java:1277)
at org.jenkinsci.plugins.gitclient.CliGitAPIImpl.launchCommandWithCredentials(CliGitAPIImpl.java:1268)
at org.jenkinsci.plugins.gitclient.CliGitAPIImpl.getHeadRev(CliGitAPIImpl.java:2355)
at hudson.plugins.git.GitSCM.compareRemoteRevisionWithImpl(GitSCM.java:530)
at hudson.plugins.git.GitSCM.compareRemoteRevisionWith(GitSCM.java:494)
... 12 more
Done. Took 28 ms
No changes