JGit: Checkout a remote branch

Question

I'm using JGit to checkout a remote tracking branch.

Git binrepository = cloneCmd.call()  CheckoutCommand checkoutCmd = binrepository.checkout(); checkoutCmd.setName( "origin/" + branchName); checkoutCmd.setUpstreamMode(CreateBranchCommand.SetupUpstreamMode.TRACK ); checkoutCmd.setStartPoint( "origin/" + branchName );  Ref ref = checkoutCmd.call(); 

The files are checked out, but the HEAD is not pointing to the branch. Following is the git status output,

$ git status # Not currently on any branch. nothing to commit (working directory clean) 

The same operation can be performed in git command line, easily and it works,

git checkout -t origin/mybranch 

How to do this JGit?

Answer 1

You have to use setCreateBranch to create a branch:

Ref ref = git.checkout().         setCreateBranch(true).         setName("branchName").         setUpstreamMode(CreateBranchCommand.SetupUpstreamMode.TRACK).         setStartPoint("origin/" + branchName).         call(); 

Your first command was the equivalent of git checkout origin/mybranch.

(Edit: I submitted a patch to JGit to improve the documentation of CheckoutCommand: https://git.eclipse.org/r/8259)