$ git clone -n https://src.fedoraproject.org/rpms/shaman.git /var/lib/mock/f40-build-2260827-54423/root/chroot_tmpdir/scmroot/shaman
Cloning into '/var/lib/mock/f40-build-2260827-54423/root/chroot_tmpdir/scmroot/shaman'...
$ git fetch origin 51b9f629f3527943475a6b6f52ddd6daba508822:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/shaman
 * [new ref]         51b9f629f3527943475a6b6f52ddd6daba508822 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 51b9f62 Orphaned for 6+ weeks