$ git clone -n https://src.fedoraproject.org/rpms/ibus-rime.git /var/lib/mock/f45-build-13988-456/root/chroot_tmpdir/scmroot/ibus-rime
Cloning into '/var/lib/mock/f45-build-13988-456/root/chroot_tmpdir/scmroot/ibus-rime'...
$ git fetch origin 3977cb391e2e99d2d8b51363ac19e7c7f860fbc7:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ibus-rime
 * [new ref]         3977cb391e2e99d2d8b51363ac19e7c7f860fbc7 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3977cb3 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild