git-plugin does not detect changes and thus does not trigger builds

Git plugin used to detect changes when the specified branch was "feature/abc" but no longer does.

Does not detect:

Started on Mar 10, 2015 4:13:00 PM
Using strategy: Default
[poll] Last Built Revision: Revision 5...9 (refs/remotes/origin/feature/abc)fhuberts
using GIT_SSH to set credentials Git Credentials
> git --version # timeout=10
> git ls-remote -h ssh://myserver/myproject.git # timeout=10
Done. Took 0.81 sec
No changes

Does detect:

Started on Mar 10, 2015 4:16:00 PM
Using strategy: Default
[poll] Last Built Revision: Revision 1...e (origin/develop)
> git --version # timeout=10
> git ls-remote -h ssh://myserver/otherproject.git # timeout=10
[poll] Latest remote head revision on origin/develop is: 1...e - already built by 81
Done. Took 0.8 sec
No changes

Workaround:
Revert to GIT Plugin 2.3.4