这两天在搭建Jenkins环境，在构建新job时报ERROR: Error fetching remote repo 'origin'，具体错误如下：
Started by user wupan
Building in workspace /root/.jenkins/workspace/deploy
> git rev-parse --is-inside-work-tree # timeout=10
Fetching changes from the remote Git repository
> git config remote.origin.url {url} # timeout=10
Fetching upstream changes from {url}
> git --version # timeout=10
using GIT_ASKPASS to set credentials
> git fetch --tags --progress {url} +refs/heads/*:refs/remotes/origin/*
ERROR: Timeout after 10 minutes
ERROR: Error fetching remote repo 'origin'
hudson.plugins.git.GitException: Failed to fetch from {url}
at hudson.plugins.git.GitSCM.fetchFrom(GitSCM.java:888)
at hudson.plugins.git.GitSCM.retrieveChanges(GitSCM.java:1155)
at hudson.plugins.git.GitSCM.checkout(GitSCM.java:1186)
at hudson.scm.SCM.checkout(SCM.java:504)
at hudson.model.AbstractProject.checkout(AbstractProject.java:1208)
at hudson.model.AbstractBuild$AbstractBuildExecution.defaultCheckout(AbstractBuild.java:574)
at jenkins.scm.SCMCheckoutStrategy.checkout(SCMCheckoutStrategy.java:86)
at hudson.model.AbstractBuild$AbstractBuildExecution.run(AbstractBuild.java:499)
at hudson.model.Run.execute(Run.java:1727)
at hudson.model.FreeStyleBuild.run(FreeStyleBuild.java:43)
at hudson.model.ResourceController.execute(ResourceController.java:97)
at hudson.model.Executor.run(Executor.java:429)
Caused by: hudson.plugins.git.GitException: Command "git fetch --tags --progress {url} +refs/heads/*:refs/remotes/origin/*" returned status code 128:
stdout:
stderr: remote: Counting objects: 62, done.
remote: Compressing objects: 4% (1/23)
remote: Compressing objects: 8% (2/23)
remote: Compressing objects: 13% (3/23)
remote: Compressing objects: 17% (4/23)
remote: Compressing objects: 21% (5/23)
remote: Compressing objects: 26% (6/23)
remote: Compressing objects: 30% (7/23)
remote: Compressing objects: 34% (8/23)
remote: Compressing objects: 39% (9/23)
remote: Compressing objects: 43% (10/23)
remote: Compressing objects: 47% (11/23)
remote: Compressing objects: 52% (12/23)
remote: Compressing objects: 56% (13/23)
remote: Compressing objects: 60% (14/23)
remote: Compressing objects: 65% (15/23)
remote: Compressing objects: 69% (16/23)
remote: Compressing objects: 73% (17/23)
remote: Compressing objects: 78% (18/23)
remote: Compressing objects: 82% (19/23)
remote: Compressing objects: 86% (20/23)
remote: Compressing objects: 91% (21/23)
remote: Compressing objects: 95% (22/23)
remote: Compressing objects: 100% (23/23)
remote: Compressing objects: 100% (23/23), done.
error: unpack-objects died of signal 15
fatal: unpack-objects failed
at org.jenkinsci.plugins.gitclient.CliGitAPIImpl.launchCommandIn(CliGitAPIImpl.java:2002)
at org.jenkinsci.plugins.gitclient.CliGitAPIImpl.launchCommandWithCredentials(CliGitAPIImpl.java:1721)
at org.jenkinsci.plugins.gitclient.CliGitAPIImpl.access$300(CliGitAPIImpl.java:72)
at org.jenkinsci.plugins.gitclient.CliGitAPIImpl$1.execute(CliGitAPIImpl.java:405)
at hudson.plugins.git.GitSCM.fetchFrom(GitSCM.java:886)
... 11 more
ERROR: Error fetching remote repo 'origin'
Finished: FAILURE
遇到问题后，开始了漫长的百度，有网友提供了下面几个解决的思路。
解决思路：
1、第一时间发现应该是权限问题，那么可以切换成git协议或者https的协议去获取。
2、如果不是协议的问题，看是不是git的路径错了导致的，再次配置节点的机器上的git路径。
3、如果是linux的机器，就要去确定是不是SSH的key导致的，而且用ssh去连接git，那么就要去配置ssh的key，这一点比较复杂也很重要。
解决方案：
一、权限问题导致
1、配置Jenkins的Git环境
Name：Git用户名，我配置的是GitHub的用户名，大家可以试试其他的
Path to Git executable：Git安装路径（Linux命令:which git、windows 命令: where git）
2、把私钥拷贝到git配置中
在源码管理中，点击Add，添加秘钥
Repository URL：git代码地址
Credentials：秘钥
Kind：选择SSH Username with private key
Username：随便填写
Private Key：选择Enter directly
Key：系统生成的git id_rsa中的Key
2）输入完成后点击保存，源码管理中填写
Repository URL：git代码地址
Credentials：秘钥（选择刚才填写的UserName）
3）点击保存，重新构建Job，结果成功
二、将url改成http://用户名:密码@ip/的格式，git配置改成不使用密码（网友提供色解决方案未尝试，大家可以去试试）
如果有问题，可以在下面评论，谢谢