$ git clone -n https://src.fedoraproject.org/rpms/gnome-desktop3.git /var/lib/mock/f41-build-846101-162961/root/chroot_tmpdir/scmroot/gnome-desktop3
Cloning into '/var/lib/mock/f41-build-846101-162961/root/chroot_tmpdir/scmroot/gnome-desktop3'...
$ git fetch origin 84fb4fd419191b1afbcdeb58ea8cc9b5a0a60ebf:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gnome-desktop3
 * [new ref]         84fb4fd419191b1afbcdeb58ea8cc9b5a0a60ebf -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 84fb4fd Use gnome-desktop 44.1 sources