init-repository fails when repositories are not at a URL ending with "qt"

When the Qt repositories are not at a URL of the form ".../qt/<repo>", the init-repository script fails. This is an issue for me because I have a GitHub fork of Qt whose URLs necessarily do not take the form ".../qt/<repo>".

It is trivial to make the init-repository script robust enough to not require the "/qt/" portion of the URL, and there is no reason the URL needs to be of this form.