$ git clone -n https://src.fedoraproject.org/rpms/wgrib2.git /var/lib/mock/f42-build-864784-172559/root/chroot_tmpdir/scmroot/wgrib2
Cloning into '/var/lib/mock/f42-build-864784-172559/root/chroot_tmpdir/scmroot/wgrib2'...
$ git fetch origin 208febf0d6e99ab93857b9504fa10a9e97ebad63:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/wgrib2
 * [new ref]         208febf0d6e99ab93857b9504fa10a9e97ebad63 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 208febf Rebuild for hdf5 1.14.5