<object>::
An object to treat as the head of an unreachability trace.
+
-If no objects are given, `git-fsck` defaults to using the
+If no objects are given, 'git-fsck' defaults to using the
index file, all SHA1 references in .git/refs/*, and all reflogs (unless
--no-reflogs is given) as heads.
So for example
- git fsck --unreachable HEAD $(cat .git/refs/heads/*)
+ git fsck --unreachable HEAD \
+ $(git for-each-ref --format="%(objectname)" refs/heads)
will do quite a _lot_ of verification on the tree. There are a few
extra validity tests to be added (make sure that tree objects are
-sorted properly etc), but on the whole if `git-fsck` is happy, you
+sorted properly etc), but on the whole if 'git-fsck' is happy, you
do have a valid tree.
Any corrupt objects you will have to find in backups or other archives
-(i.e., you can just remove them and do an `rsync` with some other site in
+(i.e., you can just remove them and do an 'rsync' with some other site in
the hopes that somebody else has the object you have corrupted).
Of course, "valid tree" doesn't mean that it wasn't generated by some