$ git clone -n https://src.fedoraproject.org/rpms/clapper.git /var/lib/mock/f41-build-side-1-2633104-25891/root/chroot_tmpdir/scmroot/clapper
Cloning into '/var/lib/mock/f41-build-side-1-2633104-25891/root/chroot_tmpdir/scmroot/clapper'...
$ git fetch origin 44e61398a9621dd9903bb60c03a35afd8dae40bb:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/clapper
 * [new ref]         44e61398a9621dd9903bb60c03a35afd8dae40bb -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 44e6139 Update to version 0.6.1; Fixes RHBZ#2295448