$ git clone -n https://src.fedoraproject.org/rpms/rang.git /var/lib/mock/f45-build-34315-684/root/chroot_tmpdir/scmroot/rang
Cloning into '/var/lib/mock/f45-build-34315-684/root/chroot_tmpdir/scmroot/rang'...
$ git fetch origin 2943edf32328a160e5bb02459b2d51210c11fb3f:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rang
 * [new ref]         2943edf32328a160e5bb02459b2d51210c11fb3f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 2943edf Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild