$ git clone -n https://src.fedoraproject.org/rpms/rwhoisd.git /var/lib/mock/f45-build-35514-695/root/chroot_tmpdir/scmroot/rwhoisd
Cloning into '/var/lib/mock/f45-build-35514-695/root/chroot_tmpdir/scmroot/rwhoisd'...
$ git fetch origin 60d9bd3186e57735c1bfca1c86cab4047215210e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rwhoisd
 * [new ref]         60d9bd3186e57735c1bfca1c86cab4047215210e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 60d9bd3 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild