1>看下error log:

[7.0-msm8953-Build-Dev-phoenix] $ repo init -u ssh://172.29.0.92/manifest -b rel/8953/zd552kl/7.1.1-11.40.208
Traceback (most recent call last):
  File "/home/builder5/jenkins_slave/workspace/7.0-msm8953-Build-Dev-phoenix/.repo/repo/main.py", line 418, in <module>
    _Main(sys.argv[1:])
  File "/home/builder5/jenkins_slave/workspace/7.0-msm8953-Build-Dev-phoenix/.repo/repo/main.py", line 394, in _Main
    result = repo._Run(argv) or 0
  File "/home/builder5/jenkins_slave/workspace/7.0-msm8953-Build-Dev-phoenix/.repo/repo/main.py", line 142, in _Run
    result = cmd.Execute(copts, cargs)
  File "/home/builder5/jenkins_slave/workspace/7.0-msm8953-Build-Dev-phoenix/.repo/repo/subcmds/init.py", line 369, in Execute
    self._SyncManifest(opt)
  File "/home/builder5/jenkins_slave/workspace/7.0-msm8953-Build-Dev-phoenix/.repo/repo/subcmds/init.py", line 222, in _SyncManifest
    m.MetaBranchSwitch(opt.manifest_branch)
  File "/home/builder5/jenkins_slave/workspace/7.0-msm8953-Build-Dev-phoenix/.repo/repo/project.py", line 2430, in MetaBranchSwitch
    self.Sync_LocalHalf(syncbuf)
  File "/home/builder5/jenkins_slave/workspace/7.0-msm8953-Build-Dev-phoenix/.repo/repo/project.py", line 1106, in Sync_LocalHalf
    lost = self._revlist(not_rev(revid), HEAD)
  File "/home/builder5/jenkins_slave/workspace/7.0-msm8953-Build-Dev-phoenix/.repo/repo/project.py", line 2080, in _revlist
    return self.work_git.rev_list(*a, **kw)
  File "/home/builder5/jenkins_slave/workspace/7.0-msm8953-Build-Dev-phoenix/.repo/repo/project.py", line 2233, in rev_list
    p.stderr))
error.GitError: manifests rev-list (u'^2736dfd46e8a30cf59a9cd6e93d9e56e87021f2a', 'HEAD', '--'): fatal: bad revision 'HEAD'
java.io.IOException: Could not checkout
	at hudson.plugins.repo.RepoScm.checkout(RepoScm.java:701)
	at hudson.scm.SCM.checkout(SCM.java:495)
	at hudson.model.AbstractProject.checkout(AbstractProject.java:1212)
	at hudson.model.AbstractBuild$AbstractBuildExecution.defaultCheckout(AbstractBuild.java:560)
	at jenkins.scm.SCMCheckoutStrategy.checkout(SCMCheckoutStrategy.java:86)
	at hudson.model.AbstractBuild$AbstractBuildExecution.run(AbstractBuild.java:485)
	at hudson.model.Run.execute(Run.java:1737)
	at hudson.model.FreeStyleBuild.run(FreeStyleBuild.java:43)
	at hudson.model.ResourceController.execute(ResourceController.java:97)
	at hudson.model.Executor.run(Executor.java:419)
Finished: FAILURE

error.GitError: manifests rev-list (u'^2736dfd46e8a30cf59a9cd6e93d9e56e87021f2a', 'HEAD', '--'): fatal: bad revision 'HEAD'

commit2736dfd46e8a30cf59a9cd6e93d9e56e87021f2a，就是HEAD应指向的commit，而现在出错找不到了

3>cd .repo/manifests

4>git branch -av，找到当前分支对应的远程分支

  
  
jessie@jessie:~/androidcode/temp/.repo/manifests$ git branch -av | grep 208
  remotes/m/rel/8953/zd552kl/7.1.1-11.40.208                -> origin/rel/8953/zd552kl/7.1.1-11.40.208
  remotes/origin/dev/ze550kl/asus/5.0.0-20150208            11a37fe set dev/ze550kl/asus/5.0.0-20150208
  remotes/origin/rel/8953/zd552kl/7.1.1-11.40.208           2736dfd Remove opencv3 from the manifest

5>把HEAD切回原来指向的远程分支

git reset --hard remotes/origin/rel/8953/zd552kl/7.1.1-11.40.208