$ git clone -n https://src.fedoraproject.org/rpms/amiri-fonts.git /var/lib/mock/f42-build-side-1-3582743-46886/root/chroot_tmpdir/scmroot/amiri-fonts
Cloning into '/var/lib/mock/f42-build-side-1-3582743-46886/root/chroot_tmpdir/scmroot/amiri-fonts'...
$ git fetch origin 6ca03e4ebf642584d75bfe653fdad24ee5e861a7:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/amiri-fonts
 * [new ref]         6ca03e4ebf642584d75bfe653fdad24ee5e861a7 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6ca03e4 Update to 1.003