$ git clone -n https://src.fedoraproject.org/rpms/oscillatord.git /var/lib/mock/f41-build-846604-163134/root/chroot_tmpdir/scmroot/oscillatord
Cloning into '/var/lib/mock/f41-build-846604-163134/root/chroot_tmpdir/scmroot/oscillatord'...
$ git fetch origin b629974dc154a41c65a73e4aad3eba7b75556918:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/oscillatord
 * [new ref]         b629974dc154a41c65a73e4aad3eba7b75556918 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b629974 Update to 3.8.2