GIT Clone Error

[jake_brown]

Hello, 

I'm went in to my web set up to upgrade magento from 2.3 to 2.3.1

However, i'm getting the bellow error. 

We're sorry, no components are available because you cloned the Magento 2 GitHub repository. You must manually update components as discussed in the Installation Guide.

This has thrown me a little as we updated to v2.3 with the ZIP file Magento-CE-2.3.0-2018-11-27-10-23-08.zip

Which i believe is the official downloaded version of Magento 2.3 and not a GIT clone. 

There is the Update folder present in my root which i thought wouldn't be there if it was a GIT Clone. 

Can anyone advise? I'm supposed to be launching this DEV site at the end of the week and this has put a massive spanner in the works. 

Any help would be appreciated. 

Thank you

[Sunil Patel]

Hello @jake_brown 

seems like you installed magento using git not using composer.

so go to your root dir

and do git pull you will see all branch name

then git checkout your branch name

e.g git checkout 2.3.1

hope it will work for you.

if works then mark as solution

[jake_brown]

Thank you, 

I get this response,

Command "git" is not defined.

[Sunil Patel]

Hello @jake_brown 

first question how you install magento when you did first time

if first time you did using git then you need to follow that way, otherwise download zip file from git and install manually for specific version

if works then mark as solution

[jake_brown]

Thank you for your help Sunil.

I have installed a new instance of magento 2.3.1 using composer & will move on from there.