$ git clone -n https://src.fedoraproject.org/rpms/lxappearance.git /var/lib/mock/f45-build-17797-504/root/chroot_tmpdir/scmroot/lxappearance
Cloning into '/var/lib/mock/f45-build-17797-504/root/chroot_tmpdir/scmroot/lxappearance'...
$ git fetch origin ba309e6af536d72dcde0e24051769fc7092e41b9:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/lxappearance
 * [new ref]         ba309e6af536d72dcde0e24051769fc7092e41b9 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ba309e6 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild