Re: Recovering from a bad object

[Enrico Weigelt <weigelt@metux.de>]

* Junio C Hamano <gitster@pobox.com> wrote:

> > The object is likely at kernel.org.
> > Can git go fetch it somehow?
> 
> The protocol is designed specifically to disallow "I guessed that the
> trade secret is contained within an object whose object name is this,
> please feed me that object" kind of requests, so in general no.

Maybe the local side (in some special repair mode) could check if
some of the remote refs (and their referenced graphs) are broken
and refetch them completely. If the remote side(s) got the objects
you're missing (visibile to you), you'll be done after that.

For example:

A local branch "foo" is based on origin/master, somewhere in the
line behind origin/master some objects are broken:

It would find out that origin/master points to broken/missing objects
and refetch it completely afresh (same as it would if they had never
been fetched yet).


Perhaps it's not that hard to implement: just requires a special
git-fetch operation mode that ignores locally existing objects,
and a few lines of shell code that simply fetches the whole remote
to some temporary namespaces (and drop that when done). Ends up in
the same traffic as a fresh clone, but at least runs automatically.


cu
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 Enrico Weigelt, metux IT service -- http://www.metux.de/

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