What must be added to the cmder's .gitconfig file to run sublimemerge as a git mergetool?

Question

I was eager to try out the new git mergetool integration, but I ran into a problem:

I’m running Windows 10 and installed the SublimeMerge package. I'm also using cmder instead of windows CLI as it also comes up with git integration (no need to install git bash additionally). I have searched enough but unable to find a solution.

I have added C:\Program Files\Sublime Merge to my %PATH% variable. And updated global git configuration settings

git config --global merge.tool smerge

But according to official git mergetool documentation:

Use the merge resolution program specified by . Valid values include emerge, gvimdiff, kdiff3, meld, vimdiff, and tortoisemerge. Run git mergetool --tool-help for the list of valid settings.

When I run the command, I am missing smerge under mergetools, refer screenhot below : cmder console screenshot

I strongly belive my changes are not being refected in cmder's gitconfig file but at the same time there should be a way to do it.