Block the creation of empty commits #470
Merged
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In specific cases, the update mechanism may lead to no files being changed. The changes short-circuit the process to exit early when 0 files have been modified.
go-git has been changed to return an error when an empty commit is detected, which is used as a last resort.
When the push branch is different than the clone branch, the controller will now download all branch references from the Git server, in order to enable a single fetch operation.
Fixes #466.