How to make author mention in on_member_update?

Question

Python

Greetings. I made a code that, when issuing a role, takes it, then outputs a message to the channel. I need that when the user gives the role through the plus sign, but I need the bot to mention the user who tried to do this, and not the bot itself. (gid variable) The code is below

the code

async def on_member_update(member,after):
  channel = member.guild.get_channel(758688731610742825)
  gid = guild.user
  bad_role = discord.utils.get(member.guild.roles, id = 761647037417783319 )
  for role in after.roles:
    		if role.id == 761647037417783319:
        		await member.remove_roles(bad_role)
        		await channel.send(f"**{gid}Пользователю {member.mention} попытались выдать роль `{bad_role}` ! С него были сняты роли**")