Jenkins构建时候报错The requested URL returned error: 401 Unauthorized while accessing

Jenkins构建时候报错信息如下：

ERROR: Error fetching remote repo 'origin'
hudson.plugins.git.GitException: Failed to fetch from http://gitlab.testgu.com/ycyzharry/datatest.git
    at hudson.plugins.git.GitSCM.fetchFrom(GitSCM.java:894)
    at hudson.plugins.git.GitSCM.retrieveChanges(GitSCM.java:1161)
    at hudson.plugins.git.GitSCM.checkout(GitSCM.java:1192)
    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:1818)
    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 http://gitlab.testgu.com/ycyzharry/datatest.git +refs/heads/*:refs/remotes/origin/*" returned status code 128:
stdout: 
stderr: error: The requested URL returned error: 401 Unauthorized while accessing http://gitlab.testgu.com/ycyzharry/datatest.git/info/refs

fatal: HTTP request failed

    at org.jenkinsci.plugins.gitclient.CliGitAPIImpl.launchCommandIn(CliGitAPIImpl.java:2174)
    at org.jenkinsci.plugins.gitclient.CliGitAPIImpl.launchCommandWithCredentials(CliGitAPIImpl.java:1866)
    at org.jenkinsci.plugins.gitclient.CliGitAPIImpl.access$500(CliGitAPIImpl.java:78)
    at org.jenkinsci.plugins.gitclient.CliGitAPIImpl$1.execute(CliGitAPIImpl.java:547)
    at hudson.plugins.git.GitSCM.fetchFrom(GitSCM.java:892)
    ... 11 more
ERROR: Error fetching remote repo 'origin'
Finished: FAILURE