$ git clone -n https://src.fedoraproject.org/rpms/libsexy.git /var/lib/mock/f45-build-16960-494/root/chroot_tmpdir/scmroot/libsexy
Cloning into '/var/lib/mock/f45-build-16960-494/root/chroot_tmpdir/scmroot/libsexy'...
$ git fetch origin d3ca7a71ca3b8759793e3a396bf224a3358c6711:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libsexy
 * [new ref]         d3ca7a71ca3b8759793e3a396bf224a3358c6711 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d3ca7a7 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild