Аннотация:MASTER-OAGH robotic telescope (Global MASTER-Net: http://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, vol. 2010, 30L) located in Mexico (OAGH National Institute for Astrophysics, Optics and Electronics) was pointed to the Swift GRB 220412B ( J.D. Gropp et al., GCN 31886) errorbox 61446 sec after notice time and 61475 sec after trigger time at 2022-04-13 10:11:24 UT, with upper limit up to 17.5 mag. The observations began at zenith distance = 77 deg. The sun altitude is -32.6 deg. The galactic latitude b = -34 deg., longitude l = 53 deg. Real time updated cover map and OT discovered available here: https://master.sai.msu.ru/site/master2/observ.php?id=1940975 We obtain a following upper limits. Tmid-T0 | Site |Filt.| Expt. | Limit| Comment |_|| 61505 | MASTER-OAGH | C | 60 | 17.5 | 61505 | MASTER-OAGH | C | 60 | 17.3 | Filter C is a clear (unfiltred) band. The observation and reduction will continue. The message may be cited.