SHA-256 object hashes cause fatal error on push

[h3xx]

Description

Steps:

1. Run these commands to set up your repository:

git init --object-format=sha256
touch test
git add .
git commit -m 'Initial commit'

2. Push it to a gitea instance.

Results in fatal server-side error:

$ git push -vvv origin main
Pushing to codeberg.org:h3xx/test-sha256
fatal: protocol error: unexpected capabilities^{}
fatal: the remote end hung up unexpectedly
Gitea: Internal error

Note: that's literal ^{} garbage characters.

Expected:

• A better error message. This one makes me feel like I broke your site.
• OR (and I realize it's a long shot) support for SHA-256 object hashes

git 2.39.0

Gitea Version

latest

Can you reproduce the bug on the Gitea demo site?

Yes

Log Gist

No response

Screenshots

No response

Git Version

2.39.0

Operating System

No response

How are you running Gitea?

Codeberg.org

Database

None

[lafriks]

Gitea currently does not support sha256 hashes

[lafriks]

Duplicate of #13794