$ git clone -n https://src.fedoraproject.org/rpms/coin-or-Cbc.git /var/lib/mock/f45-build-4844-334/root/chroot_tmpdir/scmroot/coin-or-Cbc
Cloning into '/var/lib/mock/f45-build-4844-334/root/chroot_tmpdir/scmroot/coin-or-Cbc'...
$ git fetch origin 2650147ee459047f89552d3d9d7a9443a868432a:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/coin-or-Cbc
 * [new ref]         2650147ee459047f89552d3d9d7a9443a868432a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 2650147 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild