Function getShortName

getShortName(ref: undefined | string): undefined | string
Extracts the short name from a git reference.

Removes common git ref prefixes to get clean reference names:
- refs/heads/main -> main
- refs/tags/v1.0 -> v1.0
- refs/remotes/origin/feature -> feature
Parameters
- ref: undefined | string
  Full git reference or undefined
Returns undefined | string
Short reference name or undefined if input is undefined
- Defined in src/lib/git.ts:372