$ git clone -n https://src.fedoraproject.org/rpms/gnome-shell.git /var/lib/mock/f40-build-1945531-25181/root/chroot_tmpdir/scmroot/gnome-shell
Cloning into '/var/lib/mock/f40-build-1945531-25181/root/chroot_tmpdir/scmroot/gnome-shell'...
$ git fetch origin 50fc3fd3bea28503342814a1ac645121b0374e3f:KOJI_FETCH_HEAD
fatal: unable to access 'https://src.fedoraproject.org/rpms/gnome-shell.git/': OpenSSL SSL_connect: SSL_ERROR_SYSCALL in connection to src.fedoraproject.org:443 
$ git reset --hard 50fc3fd3bea28503342814a1ac645121b0374e3f
HEAD is now at 50fc3fd Update to 46.4