Support Stage/commit renamed files with "core.ignoreCase=false" on case-insensitive file system

I set "git config core.ignorecase false" in my repositories and I am trying to first stage their new names:

When I select all new names and hit Stage, Smargit issues a command adding both the new and old file names.

The result of the command can be seem next. I am renaming files (in submodules) fixing their case name, for example, from README.MD to README.md, and similar case name fixies.

Adding New names: (Smartgit console)
Alignment> git.exe add --force -- README.md readme.md
AmxxChannel> git.exe add --force -- README.MD README.md
AmxxEditor> git.exe add --force -- README.MD README.md
ApplySyntax> git.exe add --force -- README.md readme.md
BracketHighlighter> git.exe add --force -- README.md readme.md
BufferScroll> git.exe add --force -- README.md readme.md
C++ Completions> git.exe add --force -- README.md readme.md
CaseConversion> git.exe add --force -- README.md readme.md
ChannelRepositoryTools> git.exe add --force -- README.md readme.md
ClearCursorsCarets> git.exe add --force -- README.MD README.md
ClipboardScopeCopy> git.exe add --force -- README.MD README.md
DefaultSyntax> git.exe add --force -- README.MD README.md
ExportHtml> git.exe add --force -- README.md readme.md
FixProjectSwitchRestartBug> git.exe add --force -- README.MD README.md
FixSelectionAfterIndent> git.exe add --force -- README.MD README.md
ForceRewriteSublimeSettings> git.exe add --force -- README.MD README.md
GotoLastEditEnhanced> git.exe add --force -- README.md readme.md
HexViewer> git.exe add --force -- README.md readme.md
IndentSize> git.exe add --force -- README.md readme.md
KeepPastedTextSelected> git.exe add --force -- README.MD README.md
Language - English and Portuguese> git.exe add --force -- README.MD README.md
Octave> git.exe add --force -- README.MD README.md
OpenAutoCompletion> git.exe add --force -- README.MD README.md
OverrideCommitCompletion> git.exe add --force -- README.MD README.md
PackagesManager> git.exe add --force -- README.md readme.md
RememberCommandPaletteInput> git.exe add --force -- README.MD README.md
RichPlainText> git.exe add --force -- README.MD README.md
ScopeHunter> git.exe add --force -- README.md readme.md
SelectAllSpellingErrors> git.exe add --force -- README.MD README.md
SideBarEnhancements> git.exe add --force -- README.md readme.md
SkipCloseForClonedViews> git.exe add --force -- README.MD README.md
SQLKeywordUppercase> git.exe add --force -- README.MD README.md
StudioChannel> git.exe add --force -- README.MD README.md
SyncViewScroll> git.exe add --force -- README.md ReadMe.md
TerminalShortcuts> git.exe add --force -- README.md readme.md
VBScript> git.exe add --force -- README.md readme.md
ViewSettingsFreely> git.exe add --force -- README.MD README.md
WordCount> git.exe add --force -- README.md readme.md

As you can see, the above command is adding both new and old names of the files.

However, after running the above, the working tree lost the renamed status of the files and only the new names were staged as new files, instead of renamed files.

The old file names are still marked as untracked/Missing.

Then, if I try to stage the old names with Smartgit, nothing happens:

Old names: (Smartgit console)
Alignment> git.exe add --force -- readme.md
AmxxChannel> git.exe add --force -- README.MD
AmxxEditor> git.exe add --force -- README.MD
ApplySyntax> git.exe add --force -- readme.md
BracketHighlighter> git.exe add --force -- readme.md
BufferScroll> git.exe add --force -- readme.md
C++ Completions> git.exe add --force -- readme.md
CaseConversion> git.exe add --force -- readme.md
ChannelRepositoryTools> git.exe add --force -- readme.md
ClearCursorsCarets> git.exe add --force -- README.MD
ClipboardScopeCopy> git.exe add --force -- README.MD
DefaultSyntax> git.exe add --force -- README.MD
ExportHtml> git.exe add --force -- readme.md
FixProjectSwitchRestartBug> git.exe add --force -- README.MD
FixSelectionAfterIndent> git.exe add --force -- README.MD
ForceRewriteSublimeSettings> git.exe add --force -- README.MD
GotoLastEditEnhanced> git.exe add --force -- readme.md
HexViewer> git.exe add --force -- readme.md
IndentSize> git.exe add --force -- readme.md
KeepPastedTextSelected> git.exe add --force -- README.MD
Language - English and Portuguese> git.exe add --force -- README.MD
Octave> git.exe add --force -- README.MD
OpenAutoCompletion> git.exe add --force -- README.MD
OverrideCommitCompletion> git.exe add --force -- README.MD
PackagesManager> git.exe add --force -- readme.md
RememberCommandPaletteInput> git.exe add --force -- README.MD
RichPlainText> git.exe add --force -- README.MD
ScopeHunter> git.exe add --force -- readme.md
SelectAllSpellingErrors> git.exe add --force -- README.MD
SideBarEnhancements> git.exe add --force -- readme.md
SkipCloseForClonedViews> git.exe add --force -- README.MD
SQLKeywordUppercase> git.exe add --force -- README.MD
StudioChannel> git.exe add --force -- README.MD
SyncViewScroll> git.exe add --force -- ReadMe.md
TerminalShortcuts> git.exe add --force -- readme.md
VBScript> git.exe add --force -- readme.md
ViewSettingsFreely> git.exe add --force -- README.MD
WordCount> git.exe add --force -- readme.md

Smartgit runs the command, but the files are not staged either as Removed or Renamed files.

The old file names are just kept hanging there on the working tree as nothing happened:

And If commit this, the files are marked as new files add instead of renamed files.