Don't pass git-blame's ^ SHA prefix to other cmds
Don't pass git-blame's ^ SHA prefix to other cmds

git-blame has the notion of a "boundary commit" which it indicates by showing a SHA with a leading caret ^

    https://www.kernel.org/pub/software/scm/git/docs/git-blame.html

It is not meaningful to other commands such as git-show, so strip it before passing the SHA to them.

psykzz/st3-gitblame