How to change python version in windows git bash?

Follow these steps:

1. Open Git bash, cd ~
2. Depending on your favorite editortouch, code or vim (in my case) type code .bashrc
3. Add the line alias python='winpty c:/Python27/python.exe' to the open .bashrc
4. Save and Close.
5. Try python --version on git bash again.

Hopefully it works for you.

Try setting the path inside git bash to the correct folder.

Example:

PATH=$PATH:/c/Python27/

Here is what works for me on Windows 10 (a modified version of Job Collins answer):

1. Edit .bashrc file or create it at the user home if does not exist:

    cd ~
    nano .bashrc

2. add this line (modify the user name and the python version part, the apostrophe and quotes are important)

     alias python='winpty "C:\Users\<user name>\AppData\Local\Programs\Python\Python311\python.exe"'

3. activate

source .bashrc 

4. check if everything is ok

python --version