go-git is not thread-safe. In some cases, concurrent reads may lead to repositories becoming corrupted or actions to yield invalid results (e.g. not finding an existing ref).

There is quite a bit of work until we can answer: What operations are concurrency safe and I can call from different Goroutines?

Current status

• Support read concurrency
  • Map concurrency issues (v6-exp)
    • repository.CommitObjects().Foreach() (v6-exp)
    • repository.Tags().Foreach() (v6-exp)
  • Create concurrency tests to avoid regression
• Off-set performance costs for using mutex (or add an opt-in/out flag)
• Worktree.Add()

Please share in the comments any specific operations you may having issues to use concurrently.

Relates to: #186 #48 #175