$ git clone -n https://src.fedoraproject.org/rpms/rust-sys-info.git /var/lib/mock/f40-build-2572218-62241/root/chroot_tmpdir/scmroot/rust-sys-info
Cloning into '/var/lib/mock/f40-build-2572218-62241/root/chroot_tmpdir/scmroot/rust-sys-info'...
$ git fetch origin e6581debd8d098851e9b249022a7f75be91cfd99:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-sys-info
 * [new ref]         e6581debd8d098851e9b249022a7f75be91cfd99 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e6581de Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild