$ git clone -n https://src.fedoraproject.org/rpms/rust-ciborium.git /var/lib/mock/f45-build-40778-776/root/chroot_tmpdir/scmroot/rust-ciborium
Cloning into '/var/lib/mock/f45-build-40778-776/root/chroot_tmpdir/scmroot/rust-ciborium'...
$ git fetch origin 653718fca70b29b31542fa45d2f0226b94937d88:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-ciborium
 * [new ref]         653718fca70b29b31542fa45d2f0226b94937d88 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 653718f Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild