+-A::
+ Same as `-a`, but any unreachable objects in a previous
+ pack become loose, unpacked objects, instead of being
+ left in the old pack. Unreachable objects are never
+ intentionally added to a pack, even when repacking.
+ When used with '-d', this option
+ prevents unreachable objects from being immediately
+ deleted by way of being left in the old pack and then
+ removed. Instead, the loose unreachable objects
+ will be pruned according to normal expiry rules
+ with the next linkgit:git-gc[1].
+