Options for configuring a loose object backend.
version for the struct
zlib compression level to use (0-9), where 1 is the fastest at the expense of larger files, and 9 produces the best compression at the expense of speed. 0 indicates that no compression should be performed. -1 is the default (currently optimizing for speed).
Permissions to use creating a directory or 0 for defaults
Permissions to use creating a file or 0 for defaults
Type of object IDs to use for this object database, or 0 for default (currently SHA1).