With multiple git repositories, the post-build step is not using them correctly and several situations have been seen where one repo is tried to be integrated into another and pushed.

This mixes up repositories and is fatal for the plugin.

Reproduce:

• using git scm plugin (not multiscm)
• configure it to two repositories
• repo1, explicitly named origin in the git scm configuration
• repo2, explicitly not named in the git scm configuration
• branch specifier that triggers on both repos if they change
• pretested integration configuration: master + repo1
• both repo must be able to checkout into same folder, without filename clashes (this is not normal wanted behavior, but it doesn't matter for this test)
• make a commit on a ready branch in repo2, with a new file that doesn't exist in either of the repo

Result: **The file get integrated into origin (repo1) instead of of not at all.