$ git clone -n https://src.fedoraproject.org/rpms/cosmic-panel.git /var/lib/mock/f41-build-side-1-3105106-39369/root/chroot_tmpdir/scmroot/cosmic-panel
Cloning into '/var/lib/mock/f41-build-side-1-3105106-39369/root/chroot_tmpdir/scmroot/cosmic-panel'...
$ git fetch origin fdda32d5ab57e24f55668a7c7f27a1df5e375798:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/cosmic-panel
 * [new ref]         fdda32d5ab57e24f55668a7c7f27a1df5e375798 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at fdda32d "Update to 1.0.0~alpha.3"