SIGSEGV when running git fetch

Thank you for filling out a Git bug report! Please answer the following questions to help us understand your issue.

What did you do before the bug happened? `git fetch`

What did you expect to happen? `git fetch` works normally

What happened instead?

``` $ git fetch Fetching submodule catppuccin/bat Fetching submodule catppuccin/btop Fetching submodule catppuccin/micro Fetching submodule catppuccin/delta fatal: Unable to create '/home/ubuntu/.config/.git/objects/info/commit-graphs/commit-graph-chain.lock': File exists.

Another git process seems to be running in this repository, e.g. an editor opened by 'git commit'. Please make sure all processes are terminated then try again. If it still fails, a git process may have crashed in this repository earlier: remove the file manually to continue.

$ rm -f .git/objects/info/commit-graphs/commit-graph-chain.lock

$ git fetch Fetching submodule catppuccin/bat Fetching submodule catppuccin/delta Fetching submodule catppuccin/btop Fetching submodule catppuccin/micro fish: Job 1, 'git fetch' terminated by signal SIGSEGV (Address boundary error) ```

What's different between what you expected and what actually happened? `git fetch` almost always results in a SIGSEGV, however the fetch appears to work

Anything else you want to add: I am running Ubuntu 24.04.3 LTS on a c8g.metal-48xl AWS EC2 instance

Please review the rest of the bug report below. You can delete any lines you don't wish to share.

[System Info] git version: git version 2.43.0 cpu: aarch64 no commit associated with this build sizeof-long: 8 sizeof-size_t: 8 shell-path: /bin/sh uname: Linux 6.14.0-1017-aws #17~24.04.1-Ubuntu SMP Wed Nov 5 10:32:15 UTC 2025 aarch64 compiler info: gnuc: 13.3 libc info: glibc: 2.39 $SHELL (typically, interactive shell): /usr/bin/fish

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