--expire=<time>::
Entries older than this time are pruned. Without the
option it is taken from configuration `gc.reflogExpire`,
- which in turn defaults to 90 days.
+ which in turn defaults to 90 days. --expire=all prunes
+ entries regardless of their age; --expire=never turns off
+ pruning of reachable entries (but see --expire-unreachable).
--expire-unreachable=<time>::
Entries older than this time and not reachable from
the current tip of the branch are pruned. Without the
option it is taken from configuration
`gc.reflogExpireUnreachable`, which in turn defaults to
- 30 days.
+ 30 days. --expire-unreachable=all prunes unreachable
+ entries regardless of their age; --expire-unreachable=never
+ turns off early pruning of unreachable entries (but see
+ --expire).
--all::
Instead of listing <refs> explicitly, prune all refs.