$ git clone -n https://src.fedoraproject.org/rpms/flim.git /var/lib/mock/f45-build-9058-398/root/chroot_tmpdir/scmroot/flim
Cloning into '/var/lib/mock/f45-build-9058-398/root/chroot_tmpdir/scmroot/flim'...
$ git fetch origin 31b4c3e800cfbdec0e7b5d028ce7b283ca037475:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/flim
 * [new ref]         31b4c3e800cfbdec0e7b5d028ce7b283ca037475 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 31b4c3e Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild