$ git clone -n https://src.fedoraproject.org/rpms/ibus-sayura.git /var/lib/mock/f45-build-13989-456/root/chroot_tmpdir/scmroot/ibus-sayura
Cloning into '/var/lib/mock/f45-build-13989-456/root/chroot_tmpdir/scmroot/ibus-sayura'...
$ git fetch origin 9dfdb1248808a0cab62806fb6aa57e9eb3207e49:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ibus-sayura
 * [new ref]         9dfdb1248808a0cab62806fb6aa57e9eb3207e49 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9dfdb12 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild