$ git clone -n https://src.fedoraproject.org/rpms/rust-octseq.git /var/lib/mock/f38-build-side-43-rust-devel-1411648-31436/root/chroot_tmpdir/scmroot/rust-octseq
Cloning into '/var/lib/mock/f38-build-side-43-rust-devel-1411648-31436/root/chroot_tmpdir/scmroot/rust-octseq'...
$ git fetch origin 6410022e6e4714a2899191c22cd8fa855e4e0292:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-octseq
 * [new ref]         6410022e6e4714a2899191c22cd8fa855e4e0292 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6410022 Provide minimal readme