Sourcetree Terminal Issues with permission denied public key

[Peter Philips]

Hi all,

I've set up SSH key authentication via putty and through bitbucket. When I try and clone through remote repositories, it seems to work fine.

HOWEVER, when I try to use the terminal to run certain scripts for cloning repos (such as:
git clone git@bitbucket.org:REPOSITORYORGANISATION/REPOSITORYNAME.git) I constantly run into this error:
"git@bitbucket.org: Permission denied (publickey).
fatal: Could not read from remote repository.
Please make sure you have the correct access rights
and the repository exists.
"

Which is weird as I can view the separate repos on bitbucket without issue. Please help!

Note: Am using Windows