$ git clone -n https://src.fedoraproject.org/rpms/glglobe.git /var/lib/mock/f41-build-1019213-17967/root/chroot_tmpdir/scmroot/glglobe
Cloning into '/var/lib/mock/f41-build-1019213-17967/root/chroot_tmpdir/scmroot/glglobe'...
$ git fetch origin 863a7d1a899ed23a01fb7340a9821a21a846be3c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/glglobe
 * [new ref]         863a7d1a899ed23a01fb7340a9821a21a846be3c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 863a7d1 Eliminate use of obsolete %patchN syntax (#2283636)