Fails when force pushing unrelated histories

[bogusfocused]

pre-commit looks to find difference between remote and local branches as pre-commit wants to know the files changed. But in case of force, git correctly fails to generate diff.

Expected: pre-commit can run all the hooks that has pass-filename=false as they do not require diffs.

Thanks for the awesome stuff!

[asottile]

I can't reproduce, please provide an example as force pushing is working fine for me

[bogusfocused]

The forced push is on unrelated heads and so git cannot get the difference. Below is my output...

git.exe push -v --progress --force "github" master:main
Pushing to https://github.com/bogusfocused/ha_lan_smartthings.git
An unexpected error has occurred: CalledProcessError: command: ('C:\\Program Files\\Git\\mingw64\\libexec\\git-core
\\git.EXE', 'diff', '--name-only', '--no-ext-diff', '-z', 
'8e9e6537d911cbfa8a88aa608c3afa893a340f8c...ced7786cd5098f321b48e9a1027cce4e8938cbbf')
return code: 128
expected return code: 0
stdout: (none)
stderr:
fatal: 8e9e6537d911cbfa8a88aa608c3afa893a340f8c...ced7786cd5098f321b48e9a1027cce4e8938cbbf: no merge base

Check the log at C:\Users\Rohit\.cache\pre-commit\pre-commit.log
error: failed to push some refs to 'https://github.com/bogusfocused/ha_lan_smartthings.git'


git did not exit cleanly (exit code 1) (1672 ms @ 8/9/2021 12:48:56 PM)

[asottile]

ah yeah if you're force pushing unrelated histories then that'll happen -- I'm not sure there's much that could be done in that case since it's really "push everything"

[asottile]

hmmm actually I still can't reproduce -- what version of git are you using?

[bogusfocused]

Thanks. The fix works for me.