$ git clone -n https://src.fedoraproject.org/rpms/systemd.git /var/lib/mock/f41-build-side-1-2771384-32225/root/chroot_tmpdir/scmroot/systemd
Cloning into '/var/lib/mock/f41-build-side-1-2771384-32225/root/chroot_tmpdir/scmroot/systemd'...
$ git fetch origin bedc0270e72071dd027f998629f6d633700c5b89:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/systemd
 * [new ref]         bedc0270e72071dd027f998629f6d633700c5b89 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at bedc027 Move yum/dnf protection removal config file under /usr