$ git clone -n https://src.fedoraproject.org/rpms/cosmic-panel.git /var/lib/mock/f45-build-39701-750/root/chroot_tmpdir/scmroot/cosmic-panel
Cloning into '/var/lib/mock/f45-build-39701-750/root/chroot_tmpdir/scmroot/cosmic-panel'...
$ git fetch origin 4216d11acad2315cd8f6df4cde76313144715b80:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/cosmic-panel
 * [new ref]         4216d11acad2315cd8f6df4cde76313144715b80 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4216d11 Update to 1.6.0