$ git clone -n https://src.fedoraproject.org/rpms/qmapshack.git /var/lib/mock/f42-build-862968-171273/root/chroot_tmpdir/scmroot/qmapshack
Cloning into '/var/lib/mock/f42-build-862968-171273/root/chroot_tmpdir/scmroot/qmapshack'...
$ git fetch origin 9ab770093f893a43840344964e854339f62972a9:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/qmapshack
 * [new ref]         9ab770093f893a43840344964e854339f62972a9 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9ab7700 Rebuild (GDAL)