$ git clone -n https://src.fedoraproject.org/rpms/rust-num-bigint-dig.git /var/lib/mock/f40-build-2326151-58827/root/chroot_tmpdir/scmroot/rust-num-bigint-dig
Cloning into '/var/lib/mock/f40-build-2326151-58827/root/chroot_tmpdir/scmroot/rust-num-bigint-dig'...
$ git fetch origin 7ff79ad28fbf8c1209c3438f9c24f1601554dc8d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-num-bigint-dig
 * [new ref]         7ff79ad28fbf8c1209c3438f9c24f1601554dc8d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7ff79ad Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild