$ git clone -n https://src.fedoraproject.org/rpms/rust-precomputed-hash.git /var/lib/mock/f40-build-2682551-67964/root/chroot_tmpdir/scmroot/rust-precomputed-hash
Cloning into '/var/lib/mock/f40-build-2682551-67964/root/chroot_tmpdir/scmroot/rust-precomputed-hash'...
$ git fetch origin a3ab8f787ea313419584f590e84c366341ca4f2a:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-precomputed-hash
 * [new ref]         a3ab8f787ea313419584f590e84c366341ca4f2a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a3ab8f7 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild