$ git clone -n https://src.fedoraproject.org/rpms/m17n-lib.git /var/lib/mock/f42-build-3302370-41426/root/chroot_tmpdir/scmroot/m17n-lib
Cloning into '/var/lib/mock/f42-build-3302370-41426/root/chroot_tmpdir/scmroot/m17n-lib'...
$ git fetch origin 0a384be7ba1c10d93d02259295e0f674b3cccbf1:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/m17n-lib
 * [new ref]         0a384be7ba1c10d93d02259295e0f674b3cccbf1 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 0a384be Update to 1.8.5