CM-55207: cover some edge cases in commit pre-receive#359

gotbadger merged 1 commit intomaincycodehq/cycode-cli:mainfrom

CM-55207-cli-pre-receive-hook-fails-on-initial-commitscycodehq/cycode-cli:CM-55207-cli-pre-receive-hook-fails-on-initial-commitsCopy head branch name to clipboard