$ git clone -n https://src.fedoraproject.org/rpms/gnome-desktop3.git /var/lib/mock/f38-build-696940-86521/root/chroot_tmpdir/scmroot/gnome-desktop3
Cloning into '/var/lib/mock/f38-build-696940-86521/root/chroot_tmpdir/scmroot/gnome-desktop3'...
$ git reset --hard 508e39b4b2f010ab3e5b9d7b6a1085049c9c6f3b
HEAD is now at 508e39b Update to 44.beta