Investigate file deletions

[gjtorikian]

They do not appear to be syncing to the other repository.

[nuclearsandwich]

If I recall from previous investigations, the lack of proper deletion handling is due to the way git porcelain commands are used with the squash and merge options. The replace_contents option should create a single commit that makes the receiving repository contents match exactly the source repository contents.

repository-sync/lib/cloner.rb

Lines 231 to 238 in 164b02b

	# Using HEAD here is likely the best thing since HEAD will be a pointer to
	# the head of the branch we checked out earlier and is likely more reliable
	# than manually trying to use "refs/heads/#{branch_name}"
	def replace_contents
	logger.info "Committing contents of #{originating_repo}/master into #{branch_name} directly..."
	commit_id = run_command('git', 'commit-tree', "#{remote_name}/master^{tree}", '-p', 'HEAD', '-m', commit_message)
	run_command('git', 'update-ref', 'HEAD', commit_id.chomp)
	end