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Cloning or pushing only files that have been updated

Subject: Cloning or pushing only files that have been updated

## tl;dr

2 messages between Apr 25, 2015 and Apr 25, 2015.

replies: 1people: 2as markdown or json

cl@qgenuity.com· Apr 25, 2015, 21:17 UTC · lore
Hi,
I have two sets of files.
A_Old is a large unversioned directory tree containing many files.

A_Updated is a git repository containing the files from A_Old, some of which have been modified. A_Updated also contains new files.

I am looking for a way of cloning only the new or modified files from A_Updated to A_Old. I would like A_Old to become a clone of A_Updated, however I don't want to download the entire archive because of access speed issues.

Timestamps on all files are accurate.
Any ideas?
- J
Johannes Sixt· Apr 25, 2015, 21:54 UTC · re: cl@qgenuity.com · lore

Re: Cloning or pushing only files that have been updated

Am 25.04.2015 um 23:17 schrieb cl@qgenuity.com:
Show 13 quoted lines
> I have two sets of files.
>
> A_Old is a large unversioned directory tree containing many files.
>
> A_Updated is a git repository containing the files from A_Old, some of
> which have been modified. A_Updated also contains new files.
>
> I am looking for a way of cloning only the new or modified files from
> A_Updated to A_Old. I would like A_Old to become a clone of A_Updated,
> however I don't want to download the entire archive because of access
> speed issues.
>
> Timestamps on all files are accurate.
1. Create a commit from the files in each of the directories.
2. Use git rev-list --objects --all | sort to generate a sorted list of 
objects in each of the repositories.
3. In A_Old, generate a pack from the objects that are not in A_Updated 
using 'comm' of the objects lists piped into git pack-objects.
4. Transfer this pack from A_old to A_Updated.
5. Use git fast-export --no-data in A_old.
6. Use git fast-import in A_Updated to import the commit that you have 
in A_Old into A_Updated.
7. In A_Updated, git reset --soft the-commit-from-A_Old && git commit. 
Now you have a second commit with the updated state.
8. Use git-remote to connect the two repositories and to push or pull 
the updated state.
-- Hannes

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