$ git clone -n https://src.fedoraproject.org/rpms/rust-below-render.git /var/lib/mock/f38-build-side-42-init-devel-1396577-31051/root/chroot_tmpdir/scmroot/rust-below-render
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-1396577-31051/root/chroot_tmpdir/scmroot/rust-below-render'...
$ git fetch origin 896afd89a3ce4328bf1311093241ba782babef2d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-below-render
 * [new ref]         896afd89a3ce4328bf1311093241ba782babef2d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 896afd8 Update to 0.7.1