$ git clone -n https://src.fedoraproject.org/rpms/opencc.git /var/lib/mock/f40-build-792698-138594/root/chroot_tmpdir/scmroot/opencc
Cloning into '/var/lib/mock/f40-build-792698-138594/root/chroot_tmpdir/scmroot/opencc'...
$ git fetch origin 54c3deae346e824c3a334c795c5e04c89580ed8b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/opencc
 * [new ref]         54c3deae346e824c3a334c795c5e04c89580ed8b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 54c3dea Update to 1.1.7