$ git clone -n https://src.fedoraproject.org/rpms/rust-nettle-sys.git /var/lib/mock/f40-build-2689286-68109/root/chroot_tmpdir/scmroot/rust-nettle-sys
Cloning into '/var/lib/mock/f40-build-2689286-68109/root/chroot_tmpdir/scmroot/rust-nettle-sys'...
$ git fetch origin c1a82a655143cb387d11d0fb69d88cf1e38463f3:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-nettle-sys
 * [new ref]         c1a82a655143cb387d11d0fb69d88cf1e38463f3 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c1a82a6 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild