git-merge: Put FETCH_HEAD data in merge commit message
git-merge: Put FETCH_HEAD data in merge commit message

This makes git-fetch <URL> && git-merge FETCH_HEAD produce the
same merge message as git-pull <URL>.

Signed-off-by: Michael S. Tsirkin <255103e50249e3d658441816e0597170ebfc16ef@dev.mellanox.co.il>
Signed-off-by: Junio C Hamano <dc50d1021234060e53ec42a77d526afa2fe07479@cox.net>

destenson/git,destenson/git,destenson/git,destenson/git,destenson/git,destenson/git,destenson/git,destenson/git