$ git clone -n https://src.fedoraproject.org/rpms/flam3.git /var/lib/mock/f45-build-9006-397/root/chroot_tmpdir/scmroot/flam3
Cloning into '/var/lib/mock/f45-build-9006-397/root/chroot_tmpdir/scmroot/flam3'...
$ git fetch origin 766dfda523f4c7b5ad453e750806f1ef648237ac:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/flam3
 * [new ref]         766dfda523f4c7b5ad453e750806f1ef648237ac -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 766dfda Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild