$ git clone -n https://src.fedoraproject.org/rpms/rust-dtoa-short.git /var/lib/mock/f40-build-2654712-66907/root/chroot_tmpdir/scmroot/rust-dtoa-short
Cloning into '/var/lib/mock/f40-build-2654712-66907/root/chroot_tmpdir/scmroot/rust-dtoa-short'...
$ git fetch origin 90b69c7ce8f1a6a4ce3dd4c4e208f1e1f40332f5:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-dtoa-short
 * [new ref]         90b69c7ce8f1a6a4ce3dd4c4e208f1e1f40332f5 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 90b69c7 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild