changed git state when user cancels operation

[Bhupesh-V]

Describe the bug
Changes are committed even though the user opts out of pushing the files to upstream (say for e,g hitting Ctrl+C), this is undesired.

To Reproduce
Steps to reproduce the behavior:

1. Make some changes to any dotfiles (in your HOME dir)
2. Run dotman
3. Choose option 2 to push files upstream
4. When in Enter Commit Message, hit Ctrl+c
5. cd to your dotfiles repo & see committed changes

Expected behavior
No changes to the repo should be done until the user enters the commit msg & hits Ctrl+d