fatal: it seems that there is already a rebase-merge directory

**Describe the bug**
I'd like to edit an old commit, but get the error message mentioned in the title.

**To Reproduce**
Steps to reproduce the behavior:

- GIVEN a commit I'd like to edit,
- WHEN pressing "e" to edit commit
- and changing a file
- and staging that file in lazygit
- and pressing "A" to amend the commit which I originally selected with "e" (the `<-- you are here` commit)
- and confirming that I want to amend the commit with staged files
- THEN I get the error message: "fatal: it seems that there is already a rebase-merge directory"

**Expected behavior**
I assumed that the commit would be amended.

**Version info:**
_Run `lazygit --version` and paste the result here_

commit=367b0d331836c90c015bf0c45f88612f3d94d08a, build date=2022-07-20T09:27:56Z, build source=binaryRelease, version=0.35, os=linux, arch=amd64

_Run `git --version` and paste the result here_

git version 2.25.1

**Additional context**
I'm running lazygit in a vscode console. Is it possible that vscode creates some files which lazygit does not expect?