$ git clone -n https://src.fedoraproject.org/rpms/rust-rustsec.git /var/lib/mock/f40-build-2288198-55773/root/chroot_tmpdir/scmroot/rust-rustsec
Cloning into '/var/lib/mock/f40-build-2288198-55773/root/chroot_tmpdir/scmroot/rust-rustsec'...
$ git fetch origin 085bda3394d587505df2a58c76e6e99da3cf690d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-rustsec
 * [new ref]         085bda3394d587505df2a58c76e6e99da3cf690d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 085bda3 Initial import (#2247719)