$ git clone -n https://src.fedoraproject.org/rpms/totem.git /var/lib/mock/f42-build-3352108-45014/root/chroot_tmpdir/scmroot/totem
Cloning into '/var/lib/mock/f42-build-3352108-45014/root/chroot_tmpdir/scmroot/totem'...
$ git fetch origin 7dd01f0f1050726dbfaed16f739ef03fa6d2f5f6:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/totem
 * [new ref]         7dd01f0f1050726dbfaed16f739ef03fa6d2f5f6 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7dd01f0 Added new canonical mime-type for AVI files