$ git clone -n https://src.fedoraproject.org/rpms/libstatgrab.git /var/lib/mock/f40-build-2242218-53669/root/chroot_tmpdir/scmroot/libstatgrab
Cloning into '/var/lib/mock/f40-build-2242218-53669/root/chroot_tmpdir/scmroot/libstatgrab'...
$ git fetch origin 3d047af02dc6e762a92a531c43f20f9113287c23:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libstatgrab
 * [new ref]         3d047af02dc6e762a92a531c43f20f9113287c23 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3d047af Rebuilt for log4cplus 2.1.0