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 GRB220618.38 (trigger No 1110821,02h 35m 51.84s , +55d 12m 50.4s, R=0.05) errorbox 19 sec after notice time and 50 sec after trigger time at 2022-06-18 09:11:20 UT, with upper limit up to 12.1 mag. The observations began at zenith distance = 73 deg. The sun altitude is -29.4 deg. The galactic latitude b = -4 deg., longitude l = 138 deg. Real time updated cover map and OT discovered available here: https://master.sai.msu.ru/site/master2/observ.php?id=2009312 We obtain a following upper limits. Tmid-T0 | Site |Filt.| Expt. | Limit| Comment |_|| 56 | MASTER-OAGH | C | 10 | 12.1 | Filter C is a clear (unfiltred) band. The observation and reduction will continue. The message may be cited.