Jenkins Git plugin detached HEAD

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I’m new to git and Jenkins. When I build a common Maven build with Jenkins, it works well, but when I try to perform a release with the Maven release plugin I’m getting the following error

[INFO] Executing: /bin/sh -c cd
/var/lib/jenkins/workspace/test_maven/parent && git symbolic-ref HEAD
[INFO]  Working directory:
/var/lib/jenkins/workspace/test_maven/parent  mojoFailed
org.apache.maven.plugins:maven-release-plugin:2.3.2(default-cli)
projectFailed ch.apkern.achilles:parent:1.0-SNAPSHOT  sessionEnded
Aug 6, 2018 in Jenkins by Hannah
• 14,080 points
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2 answers to this question.

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0 votes

Try this, it worked for me

Repository URL: <repo>

Branches to build: master

Checkout/merge to local branch (optional): master

answered Aug 6, 2018 by Kalgi
• 36,340 points
0 votes

Go to Job Configuration. Scroll down to Git section and click "Advanced..." button under "Repositories". Then set:

Name: origin
Refspec: +refs/heads/branch-0.1:refs/remotes/origin/localbranchname

Then click another "Advanced..." button and set:

Checkout/merge to local branch (optional): localbranchname

You can name local branch as you like, but destination in Refspec must match local branch name in that optional field (in this case "localbranchname"). This will attach HEAD to localbranchname like this:

HEAD -> refs/heads/localbranchname -> 7a698457751bdc043cfda631b81e3812c5361790
answered Aug 13, 2018 by lina
• 8,100 points

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