$ git clone -n https://src.fedoraproject.org/rpms/wgrib2.git /var/lib/mock/f45-build-38350-723/root/chroot_tmpdir/scmroot/wgrib2
Cloning into '/var/lib/mock/f45-build-38350-723/root/chroot_tmpdir/scmroot/wgrib2'...
$ git fetch origin d02360f187d755c1d3c0d90daeae8b000cb723a1:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/wgrib2
 * [new ref]         d02360f187d755c1d3c0d90daeae8b000cb723a1 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d02360f Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild