$ git clone -n https://src.fedoraproject.org/rpms/eric.git /var/lib/mock/f40-build-1507193-23890/root/chroot_tmpdir/scmroot/eric
Cloning into '/var/lib/mock/f40-build-1507193-23890/root/chroot_tmpdir/scmroot/eric'...
$ git fetch origin b366658d8a4b44fe6a8f6966041dca6bd27ba99f:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/eric
 * [new ref]         b366658d8a4b44fe6a8f6966041dca6bd27ba99f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b366658 24.6