$ git clone -n https://src.fedoraproject.org/rpms/open-vmdk.git /var/lib/mock/f40-build-800533-143605/root/chroot_tmpdir/scmroot/open-vmdk
Cloning into '/var/lib/mock/f40-build-800533-143605/root/chroot_tmpdir/scmroot/open-vmdk'...
$ git fetch origin 21525cd2b64fb670bd8bda054e7d1436dfbd5c93:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/open-vmdk
 * [new ref]         21525cd2b64fb670bd8bda054e7d1436dfbd5c93 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 21525cd Bump to version 0.3.8