| Value | Meaning | 
|---|---|
| GIT_TRACE_NONE0 | No tracing will be performed.  | 
| GIT_TRACE_FATAL1 | Severe errors that may impact the program's execution  | 
| GIT_TRACE_ERROR2 | Errors that do not impact the program's execution  | 
| GIT_TRACE_WARN3 | Warnings that suggest abnormal data  | 
| GIT_TRACE_INFO4 | Informational messages about program execution  | 
| GIT_TRACE_DEBUG5 | Detailed data that allows for debugging  | 
| GIT_TRACE_TRACE6 | Exceptionally detailed debugging data  | 
Available tracing levels. When tracing is set to a particular level, callers will be provided tracing at the given level and all lower levels.