Note as mentioned in the quoted comment to revert 719e1f561afbe020ed175825a9bd25ed62ed1697 you first need to revert 5a6a2c0f0f43676df27632d657a3f18b151a7ef8
So after doing a clean checkout of the 5.12.y branch you need to run:
git revert 5a6a2c0f0f43676df27632d657a3f18b151a7ef8 git revert 719e1f561afbe020ed175825a9bd25ed62ed1697
And then build + install the kernel after that.
Note as mentioned in the quoted comment to revert 719e1f561afbe02 0ed175825a9bd25 ed62ed1697 you first need to revert 5a6a2c0f0f43676 df27632d657a3f1 8b151a7ef8
So after doing a clean checkout of the 5.12.y branch you need to run:
git revert 5a6a2c0f0f43676 df27632d657a3f1 8b151a7ef8 0ed175825a9bd25 ed62ed1697
git revert 719e1f561afbe02
And then build + install the kernel after that.