--max-pack-size=<n>::
Maximum size of each output packfile.
- The default is 4 GiB as that is the maximum allowed
- packfile size (due to file format limitations). Some
- importers may wish to lower this, such as to ensure the
- resulting packfiles fit on CDs.
+ The default is unlimited.
--big-file-threshold=<n>::
Maximum size of a blob that fast-import will attempt to