Check if directory is git repository (without having to cd into it)

Use git -C <path> rev-parse. It will return 0 if the directory at <path> is a git repository and an error code otherwise.

Further Reading:

• rev-parse
• -C <path>

We can also try git status command and if the output is like :

fatal: Not a git repository (or any of the parent directories): .git

Then, the directory is not a git repository.