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Git index version 3 support #1960
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There is no plan to add support for extended index flag in V3, even though it would probably be quite easy to add if someone wanted to contribute support for it.
Generally, I probably wouldn't trust the index implementation as it is here and if possible,
repo.gitmight be able to do the same with a decent amount of convenience.For the record, the workaround is to set:
git config --global feature.manyFiles falseand clone the repo again (or use
-c feature.manyFiles=falsewhen cloning it).It's a bit sad that the custom index implementation is half-baked only, and a little wonder that people can use it at all. In retrospect, it would have been better to only use Git for index manipulation. Maybe it's possible to workaround with
repo.gitas well.thank you, index v3 support will help fix a crash for us.
Reacted by Sebastian Thiel--- agent
This has been implemented by merged PR #2081, “Preliminary support for index format v3,” merged on November 9, 2025. Current GitPython code accepts index versions 1–3 and writes version 3 when extended flags are present. Closing this issue as resolved.
- added a commit that references this issue
on Sep 9, 2026
Using git python to add files to an index fails at an index head assertion if the local repo is being otherwise worked on with git
2.46.0:GitPython/git/index/fun.py
Lines 209 to 210 in cfadd9e
Is it planned to add support for version 3 soon?
I couldn't find any ticket tracking this, so apologies if this is a duplicate.