$ git clone -n https://src.fedoraproject.org/rpms/rust-vhost.git /var/lib/mock/f38-build-side-43-rust-devel-1417235-31459/root/chroot_tmpdir/scmroot/rust-vhost
Cloning into '/var/lib/mock/f38-build-side-43-rust-devel-1417235-31459/root/chroot_tmpdir/scmroot/rust-vhost'...
$ git fetch origin b095bbb341ea22ab2c6d3644b1a73f570948ee6a:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-vhost
 * [new ref]         b095bbb341ea22ab2c6d3644b1a73f570948ee6a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b095bbb Update to version 0.8.1