$ git clone -n https://src.fedoraproject.org/rpms/rust-rustsec.git /var/lib/mock/f41-build-side-1-2897252-34636/root/chroot_tmpdir/scmroot/rust-rustsec
Cloning into '/var/lib/mock/f41-build-side-1-2897252-34636/root/chroot_tmpdir/scmroot/rust-rustsec'...
$ git fetch origin 706ac40da63b20d2cc2195e3d6edfdd55f7690f5:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-rustsec
 * [new ref]         706ac40da63b20d2cc2195e3d6edfdd55f7690f5 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 706ac40 Update gix dependency to 0.66