doctor: check for migrated origin Git remote.
doctor: check for migrated origin Git remote.

Closes Homebrew/homebrew#25211.

JCount/brew,mgrimes/brew,toonetown/homebrew,rwhogg/brew,Linuxbrew/brew,zmwangx/brew,reelsense/brew,nandub/brew,reelsense/brew,mistydemeo/homebrew,claui/brew,sjackman/homebrew,gregory-nisbet/brew,gregory-nisbet/brew,vitorgalvao/brew,alyssais/brew,amar-laksh/brew_sudo,claui/brew,konqui/brew,vitorgalvao/brew,AnastasiaSulyagina/brew,MikeMcQuaid/brew,jmsundar/brew,AnastasiaSulyagina/brew,bfontaine/brew,MikeMcQuaid/brew,aw1621107/brew,nandub/brew,sjackman/homebrew,aw1621107/brew,tonyg/homebrew,claui/brew,muellermartin/dist,konqui/brew,Homebrew/brew,ilovezfs/brew,AnastasiaSulyagina/brew,gregory-nisbet/brew,Linuxbrew/brew,bfontaine/brew,konqui/brew,mahori/brew,konqui/brew,alyssais/brew,mistydemeo/homebrew,rwhogg/brew,EricFromCanada/brew,Linuxbrew/brew,jmsundar/brew,reitermarkus/brew,hanxue/linuxbrew,palxex/brew,mgrimes/brew,reitermarkus/brew,tonyg/homebrew,zmwangx/brew,DomT4/brew,claui/brew,palxex/brew,nandub/brew,Homebrew/brew,mahori/brew,DomT4/brew,staticfloat/brew,tonyg/homebrew,EricFromCanada/brew,pseudocody/brew,staticfloat/brew,hanxue/linuxbrew,hanxue/linuxbrew,JCount/brew,EricFromCanada/brew,muellermartin/dist,bfontaine/brew,vitorgalvao/brew,pseudocody/brew,reitermarkus/brew,mahori/brew,amar-laksh/brew_sudo,gordonmcshane/homebrew,pseudocody/brew,reelsense/brew,Homebrew/brew,MikeMcQuaid/brew,muellermartin/dist,MikeMcQuaid/brew,gordonmcshane/homebrew,DomT4/brew,toonetown/homebrew,maxim-belkin/brew,staticfloat/brew,toonetown/homebrew,Homebrew/brew,DomT4/brew,nandub/brew,sjackman/homebrew,mgrimes/brew,amar-laksh/brew_sudo,aw1621107/brew,reitermarkus/brew,jmsundar/brew,alyssais/brew,mistydemeo/homebrew,rwhogg/brew,Linuxbrew/brew,maxim-belkin/brew,sjackman/homebrew,vitorgalvao/brew,zmwangx/brew,gordonmcshane/homebrew,maxim-belkin/brew,palxex/brew,JCount/brew,ilovezfs/brew,JCount/brew,EricFromCanada/brew,ilovezfs/brew,mahori/brew