The same problem is reproducible with java:

class T{
  public static void main(String[] args){
    System.out.println("normal\033[31mred\033[mnormal");
  }
}

It's a standard git-bash installation, i.e. a bash running in a cmd window. TERM is set to "cygwin".

The old workflow used Jira for managing tasks and Crucible for reviewing changes after they were committed.
Pre-commit reviews are definitively better, but convincing the whole team to change their dear habits is not so easy.
Therefore I was hoping to start with the well known post-commit reviews and try to change to pre-commit later.