$ git clone -n https://src.fedoraproject.org/rpms/libQGLViewer.git /var/lib/mock/f41-build-1144845-21156/root/chroot_tmpdir/scmroot/libQGLViewer
Cloning into '/var/lib/mock/f41-build-1144845-21156/root/chroot_tmpdir/scmroot/libQGLViewer'...
$ git fetch origin a3fad9b4cb249019d5552c0dc3a3c997a99e6e51:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libQGLViewer
 * [new ref]         a3fad9b4cb249019d5552c0dc3a3c997a99e6e51 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a3fad9b Eliminate use of obsolete %patchN syntax (#2283636)