$ git clone -n https://src.fedoraproject.org/rpms/xpra.git /var/lib/mock/f40-build-795026-139926/root/chroot_tmpdir/scmroot/xpra
Cloning into '/var/lib/mock/f40-build-795026-139926/root/chroot_tmpdir/scmroot/xpra'...
$ git fetch origin cada609a295451582d113a15b170cdfc60bf609f:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/xpra
 * [new ref]         cada609a295451582d113a15b170cdfc60bf609f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at cada609 Update xpra to 5.0.6