$ git clone -n https://src.fedoraproject.org/rpms/gnome-connections.git /var/lib/mock/f39-build-1627911-39406/root/chroot_tmpdir/scmroot/gnome-connections
Cloning into '/var/lib/mock/f39-build-1627911-39406/root/chroot_tmpdir/scmroot/gnome-connections'...
$ git fetch origin 8ab4ec58c3fe611a6827cea2cc3a956ac5d8214e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gnome-connections
 * [new ref]         8ab4ec58c3fe611a6827cea2cc3a956ac5d8214e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8ab4ec5 Update to 45.0