$ git clone -n https://src.fedoraproject.org/rpms/rkward.git /var/lib/mock/f43-build-side-110352-58904677-6569147/root/chroot_tmpdir/scmroot/rkward
Cloning into '/var/lib/mock/f43-build-side-110352-58904677-6569147/root/chroot_tmpdir/scmroot/rkward'...
$ git fetch origin e60a82404d3261875f6db7c833d8772f63ed566e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rkward
 * [new ref]         e60a82404d3261875f6db7c833d8772f63ed566e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e60a824 R-maint-sig mass rebuild