$ git clone -n https://src.fedoraproject.org/rpms/seahorse-caja.git /var/lib/mock/f45-build-35805-699/root/chroot_tmpdir/scmroot/seahorse-caja
Cloning into '/var/lib/mock/f45-build-35805-699/root/chroot_tmpdir/scmroot/seahorse-caja'...
$ git fetch origin 66ac2edf5e1e5d10ede16c5ce6ebc327bcb44f72:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/seahorse-caja
 * [new ref]         66ac2edf5e1e5d10ede16c5ce6ebc327bcb44f72 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 66ac2ed Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild