How would I change to the directory C:/Users/myname/project name in Git Bash?
cd /c/users/myname/project\ name
Beware that ls /, or typing cd / followed by Tab-completion, might not show the existence of this folder, but cd /c will still work. Also note that pwd (to print the current working directory) might show something like /bin, but this might not be the actual working folder for commands such as git clone, which might use the folder from which Git Bash was started.