$ git clone -n https://src.fedoraproject.org/rpms/libmediaart.git /var/lib/mock/f42-build-side-1-3588960-46952/root/chroot_tmpdir/scmroot/libmediaart
Cloning into '/var/lib/mock/f42-build-side-1-3588960-46952/root/chroot_tmpdir/scmroot/libmediaart'...
$ git fetch origin c82fc19168c6a44dbd982cc8099cf4d738ce7491:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libmediaart
 * [new ref]         c82fc19168c6a44dbd982cc8099cf4d738ce7491 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c82fc19 Update to 1.9.7