$ git clone -n https://src.fedoraproject.org/rpms/samba.git /var/lib/mock/f41-build-side-2-python-2713002-30508/root/chroot_tmpdir/scmroot/samba
Cloning into '/var/lib/mock/f41-build-side-2-python-2713002-30508/root/chroot_tmpdir/scmroot/samba'...
$ git fetch origin 108ac3fce2394c2ac44e809241f99a9675586674:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/samba
 * [new ref]         108ac3fce2394c2ac44e809241f99a9675586674 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 108ac3f Add cert directories to samba-common