Git filter-repo - failed on add files to root commit

Question

Trying to add file to the root of the branch fails with following error:

git filter-repo --force --commit-callback "if not commit.parents: commit.file_changes.append(FileChange(b'M', 'C:\MDC\MDC.7z', $(git hash-object -w 'C:\MDC\MDC.7z'), 100644))"

Traceback (most recent call last):
  File "C:/Program Files/Git/mingw64/libexec/git-core\git-filter-repo", line 3839, in <module>
    filter = RepoFilter(args)
  File "C:/Program Files/Git/mingw64/libexec/git-core\git-filter-repo", line 2661, in __init__
    self._handle_arg_callbacks()
  File "C:/Program Files/Git/mingw64/libexec/git-core\git-filter-repo", line 2763, in _handle_arg_callbacks
    handle('commit')
  File "C:/Program Files/Git/mingw64/libexec/git-core\git-filter-repo", line 2756, in handle
    setattr(self, callback_field, make_callback(type, code_string))
  File "C:/Program Files/Git/mingw64/libexec/git-core\git-filter-repo", line 2741, in make_callback
    exec('def callback({}, _do_not_use_this_var = None):\n'.format(argname)+
  File "<string>", line 2
    if not commit.parents: commit.file_changes.append(FileChange(b'M', 'C:\MDC\MDC.7z', 3d5fb68077a1d627a7ec3b18f335713c4262fbf0, 100644))
                                                                                         ^
SyntaxError: invalid syntax

Windows 10
Git Version 2.24

https://github.com/newren/git-filter-repo

Answer 1

From Python point of view 3d5fb68077a1d627a7ec3b18f335713c4262fbf0 must be a string ('3d5fb68077a1d627a7ec3b18f335713c4262fbf0'), so put quotes around it:

--commit-callback "if not commit.parents: commit.file_changes.append(FileChange(b'M', 'C:\MDC\MDC.7z', '$(git hash-object -w 'C:\MDC\MDC.7z')', 100644))"