$ git clone -n https://src.fedoraproject.org/rpms/rust-fnv.git /var/lib/mock/f40-build-2712688-72045/root/chroot_tmpdir/scmroot/rust-fnv
Cloning into '/var/lib/mock/f40-build-2712688-72045/root/chroot_tmpdir/scmroot/rust-fnv'...
$ git fetch origin a9d0a7023b024217ea6c07d2c235706307e500eb:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-fnv
 * [new ref]         a9d0a7023b024217ea6c07d2c235706307e500eb -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a9d0a70 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild