$ git clone -n https://src.fedoraproject.org/rpms/qmapshack.git /var/lib/mock/f40-build-2223718-52752/root/chroot_tmpdir/scmroot/qmapshack
Cloning into '/var/lib/mock/f40-build-2223718-52752/root/chroot_tmpdir/scmroot/qmapshack'...
$ git fetch origin 23381b34f131ab7fa6057e2382cde68c60861b5b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/qmapshack
 * [new ref]         23381b34f131ab7fa6057e2382cde68c60861b5b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 23381b3 - Rebuild (alglib)