$ git clone -n https://src.fedoraproject.org/rpms/mate-panel.git /var/lib/mock/f45-build-18071-508/root/chroot_tmpdir/scmroot/mate-panel
Cloning into '/var/lib/mock/f45-build-18071-508/root/chroot_tmpdir/scmroot/mate-panel'...
$ git fetch origin 0d31acefd4c9dfe6263fd6d3058943a7e864e9c5:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/mate-panel
 * [new ref]         0d31acefd4c9dfe6263fd6d3058943a7e864e9c5 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 0d31ace Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild