$ git clone -n https://src.fedoraproject.org/rpms/python-productmd.git /var/lib/mock/f43-build-60957808-6586765/root/chroot_tmpdir/scmroot/python-productmd
Cloning into '/var/lib/mock/f43-build-60957808-6586765/root/chroot_tmpdir/scmroot/python-productmd'...
$ git fetch origin b67b9cf1d645ac470c7f300eb194e9de26403f7a:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-productmd
 * [new ref]         b67b9cf1d645ac470c7f300eb194e9de26403f7a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b67b9cf New upstream release 1.48