Аннотация:MASTER-SAAO robotic telescope (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in South Africa (South African Astronomical Observatory) was pointed to the Swift GRB 220305A ( R. Caputo et al., GCN 31684) errorbox 5464 sec after notice time and 5486 sec after trigger time at 2022-03-05 17:44:35 UT, with upper limit up to 16.4 mag. Observations started at twilight. The observations began at zenith distance = 16 deg. The sun altitude is -8.2 deg. The galactic latitude b = -12 deg., longitude l = 249 deg. Real time updated cover map and OT discovered available here: https://master.sai.msu.ru/site/master2/observ.php?id=1902942 We obtain a following upper limits. Tmid-T0 | Site |Filt.| Expt. | Limit| Comment |_|| 5577 | MASTER-SAAO | P\textbackslash | 180 | 16.0 | 5776 | MASTER-SAAO | P\textbackslash | 180 | 16.4 | The observation and reduction will continue. The message may be cited.