$ git clone -n https://src.fedoraproject.org/rpms/lovelock-kde-theme.git /var/lib/mock/f45-build-17518-501/root/chroot_tmpdir/scmroot/lovelock-kde-theme
Cloning into '/var/lib/mock/f45-build-17518-501/root/chroot_tmpdir/scmroot/lovelock-kde-theme'...
$ git fetch origin b6346a2abd9d7a11b0fbed883082f3994d8addbe:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/lovelock-kde-theme
 * [new ref]         b6346a2abd9d7a11b0fbed883082f3994d8addbe -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b6346a2 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild