$ git clone -n https://src.fedoraproject.org/rpms/felix-parent.git /var/lib/mock/f40-build-1996332-44004/root/chroot_tmpdir/scmroot/felix-parent
Cloning into '/var/lib/mock/f40-build-1996332-44004/root/chroot_tmpdir/scmroot/felix-parent'...
$ git fetch origin bc440a05ca2850e13a80320ffb8f7b07fc10a1e9:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/felix-parent
 * [new ref]         bc440a05ca2850e13a80320ffb8f7b07fc10a1e9 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at bc440a0 Update javapackages test plan to f40