$ git clone -n https://src.fedoraproject.org/rpms/rust-impl-more.git /var/lib/mock/f40-build-2650354-66874/root/chroot_tmpdir/scmroot/rust-impl-more
Cloning into '/var/lib/mock/f40-build-2650354-66874/root/chroot_tmpdir/scmroot/rust-impl-more'...
$ git fetch origin 91f09baec9d90c9b537e75f23b75db46dc995605:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-impl-more
 * [new ref]         91f09baec9d90c9b537e75f23b75db46dc995605 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 91f09ba Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild