$ git clone -n https://src.fedoraproject.org/rpms/mate-panel.git /var/lib/mock/f40-build-2238220-53561/root/chroot_tmpdir/scmroot/mate-panel
Cloning into '/var/lib/mock/f40-build-2238220-53561/root/chroot_tmpdir/scmroot/mate-panel'...
$ git fetch origin 624d37f55c2938d525fe211cc6efd92b9f02c380:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/mate-panel
 * [new ref]         624d37f55c2938d525fe211cc6efd92b9f02c380 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 624d37f update to 1.26.4