git config for project. add projectPrefix while checkouting (Win10 x64 WSL Ubuntu 18.04)

config

...
[alias]
  co = "!f() { \
    local projectPrefix=DITBL-; \
    if [ $1 = "d" ] || [ $1 = "dev" ] || [ $1 = "develop" ]; then \
      git checkout develop; \
    elif [ $1 = "m" ] || [ $1 = "master" ] || [ $1 = "v2" ]; then \
      git checkout v2; \
    elif [ $1 != "$projectPrefix"* ]; then \
      git checkout $projectPrefix$1; \
    else \
      git checkout $1; \
    fi; \
  }; f"
  cob = "!f() { \
    local projectPrefix=DITBL-; \
    local branch=$1; \
    if [ "$1" != "$projectPrefix"* ]; then \
      branch=$projectPrefix$branch; \
    fi; \
    git checkout -b $branch; \
  }; f"
...