$ git clone -n https://src.fedoraproject.org/rpms/rust-ring.git /var/lib/mock/f38-build-side-43-rust-devel-1410572-31420/root/chroot_tmpdir/scmroot/rust-ring
Cloning into '/var/lib/mock/f38-build-side-43-rust-devel-1410572-31420/root/chroot_tmpdir/scmroot/rust-ring'...
$ git fetch origin 778d059dc23a2f984abc96a968c0244489028836:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-ring
 * [new ref]         778d059dc23a2f984abc96a968c0244489028836 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 778d059 Remove ExcludeArch but only compile on supported architectures