How do I change the AuthorDate and CommitDate of all my commits?

How do I change the AuthorDate and CommitDate of all my commits?

[gritzmann]

Hi,

I*m looking to completely anonymize the timestamps of my files and repos For the files themselves I changed their access, modify, change and birth times like this: `touch -acm -d "1980-01-01 00:00:00"`.

But how do I do the same for the AuthorDate and CommitDate of all my commits?

Thanks!

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Re: How do I change the AuthorDate and CommitDate of all my commits?

[Jeff King]

On Thu, Jan 16, 2020 at 11:30:10AM +0000, gritzmann wrote:

> I*m looking to completely anonymize the timestamps of my files and
> repos For the files themselves I changed their access, modify, change
> and birth times like this: `touch -acm -d "1980-01-01 00:00:00"`.
> 
> But how do I do the same for the AuthorDate and CommitDate of all my
> commits?

If you're just creating the commits now, you can set $GIT_AUTHOR_DATE
and $GIT_COMMITTER_DATE in the environment. Like:

  export GIT_AUTHOR_DATE='1980-01-01 00:00:00 +0000'
  export GIT_COMMITTER_DATE="$GIT_AUTHOR_DATE"

If you have existing commits, you'll have to look into rewriting them
with git-filter-branch, or piping git-fast-export to git-fast-import and
modifying the stream in between.

-Peff