tl;dr
glasgow run swd-openocd --port A --pin-swclk 1 --pin-swdio 0 -V 3.3 tcp:localhost:2222
I: g.device.hardware: generating bitstream ID 98da97a3ebd449ef3ef7991939c4b823
I: g.cli: running handler for applet 'swd-openocd'
I: g.applet.interface.swd_openocd: port(s) A voltage set to 3.3 V
I: g.applet.interface.swd_openocd: socket: listening at tcp:localhost:2222