$ git clone -n https://src.fedoraproject.org/rpms/evolution-data-server.git /var/lib/mock/f39-test-2567956-62198/root/chroot_tmpdir/scmroot/evolution-data-server
Cloning into '/var/lib/mock/f39-test-2567956-62198/root/chroot_tmpdir/scmroot/evolution-data-server'...
$ git fetch origin 7727a8889829058c38272929e4cf145be379d6c0:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/evolution-data-server
 * [new ref]         7727a8889829058c38272929e4cf145be379d6c0 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7727a88 Add patch to allow reconfiguring the dbus-prefix without rebuilding.