$ git clone -n https://src.fedoraproject.org/rpms/python-mmtf.git /var/lib/mock/f40-build-2707577-71338/root/chroot_tmpdir/scmroot/python-mmtf
Cloning into '/var/lib/mock/f40-build-2707577-71338/root/chroot_tmpdir/scmroot/python-mmtf'...
$ git fetch origin cc41693a412a156f87204f1ef4c413284dd9c466:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-mmtf
 * [new ref]         cc41693a412a156f87204f1ef4c413284dd9c466 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at cc41693 Use %autorelease and %autochangelog