$ git clone -n https://src.fedoraproject.org/rpms/libpanel.git /var/lib/mock/f45-build-16741-490/root/chroot_tmpdir/scmroot/libpanel
Cloning into '/var/lib/mock/f45-build-16741-490/root/chroot_tmpdir/scmroot/libpanel'...
$ git fetch origin 58a4be4ea73065ac29d91811a757e89a19c3038c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libpanel
 * [new ref]         58a4be4ea73065ac29d91811a757e89a19c3038c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 58a4be4 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild