$ git clone -n https://src.fedoraproject.org/rpms/rust-str_indices.git /var/lib/mock/f40-build-2590955-62640/root/chroot_tmpdir/scmroot/rust-str_indices
Cloning into '/var/lib/mock/f40-build-2590955-62640/root/chroot_tmpdir/scmroot/rust-str_indices'...
$ git fetch origin 983844a4b3d73724b7fee45b5c1e8b4c84ecb7bb:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-str_indices
 * [new ref]         983844a4b3d73724b7fee45b5c1e8b4c84ecb7bb -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 983844a Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild