No error

Generic error

Requested object could not be found

Object exists preventing operation

More than one object matches

Output buffer too short to hold data

Operation not allowed on bare repository

HEAD refers to branch with no commits

Merge in progress prevented operation

Reference was not fast-forwardable

Name/ref spec was not in a valid format

Merge conflicts prevented operation

Lock file prevented operation

Reference value does not match expected

Authentication error

Server certificate is invalid

Patch/merge has already been applied

The requested peel operation is not possible

Internal only

Signals end of iteration with iterator