$ git clone -n https://src.fedoraproject.org/rpms/python-pynamodb.git /var/lib/mock/f42-build-side-1-3585127-46902/root/chroot_tmpdir/scmroot/python-pynamodb
Cloning into '/var/lib/mock/f42-build-side-1-3585127-46902/root/chroot_tmpdir/scmroot/python-pynamodb'...
$ git fetch origin 230fbe0faf2a22a3c1cb0e50fab64f4dd193d97f:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-pynamodb
 * [new ref]         230fbe0faf2a22a3c1cb0e50fab64f4dd193d97f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 230fbe0 Update to 6.1.0 upstream release