Very strange issue, just setting up new mac with Sourcetree.
Installed Sourcetree and added my bitbucket account to preferences.
Successfully signed in using OAuth bitbucket google account...

Which has created my ssh keys here...
I then added this to my .ssh config...
My repositories all load fine in Sourcetree remote tab...

But when I try to clone my repo, there is spinning wheel and it never loads any branch information...

If I try to clone this, I get repo abort repository error...

I'm really struggling to figure out what I've done wrong here, I've never had this issue before setting up on other macs.
Any suggestions would be amazing thanks.