Re: Clarifying "invalid tag signature file" error message from git filter-branch (and others)

James Youngman wrote:

On Thu, Dec 11, 2008 at 11:13 PM, Brandon Casey [off-list ref] wrote:

quoted

quoted

Before conversion:
$ git cat-file tag FINDUTILS-4_1-10
object ce25eb352de8dc53a9a7805ba9efc1c9215d28c2
type commit
tag FINDUTILS-4_1-10
tagger Kevin Dalley

The tagger field is missing an email address, a timestamp, and a timezone. It
should look something like:

 tagger Kevin Dalley [off-list ref] 1229036026 -0800

git-mktag prevents improperly formatted tags from being created by checking
that these fields exist and are well formed.

If you know the correct values for the missing fields, then you could

Yes for the email address.      But as for the timestamp, it's not in
the tag file; that only contains the sha1.
There is a timestamp in the object being tagged, is that the timestamp
you are talking about?

Yes and no. I meant that if you knew the "real" timestamp, possibly by
extracting it from the original repository, then you can use that.
Otherwise yes, as a workaround, use the timestamp in the object being
tagged.

$ git show --pretty=raw  ce25eb352de8dc53a9a7805ba9efc1c9215d28c2
commit ce25eb352de8dc53a9a7805ba9efc1c9215d28c2
tree 752cca144d39bc55d05fbe304752b274ba22641c
parent 9a998755249b0c8c47e8657cff712fa506aa30fc
author Kevin Dalley [off-list ref] 830638152 +0000
committer Kevin Dalley [off-list ref] 830638152 +0000

The committer information should be used, though in this repository it will
probably always be the same as the author.

-brandon