$ git clone -n https://src.fedoraproject.org/rpms/rust-ciborium-ll.git /var/lib/mock/f45-build-40789-776/root/chroot_tmpdir/scmroot/rust-ciborium-ll
Cloning into '/var/lib/mock/f45-build-40789-776/root/chroot_tmpdir/scmroot/rust-ciborium-ll'...
$ git fetch origin 9bee4bf8007f6bd7a8f98a7a40ce90a7d1266c69:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-ciborium-ll
 * [new ref]         9bee4bf8007f6bd7a8f98a7a40ce90a7d1266c69 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9bee4bf Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild