$ git clone -n https://src.fedoraproject.org/forks/pnemade/rpms/iso-codes.git /var/lib/mock/f43-build-61057995-6588300/root/chroot_tmpdir/scmroot/iso-codes
Cloning into '/var/lib/mock/f43-build-61057995-6588300/root/chroot_tmpdir/scmroot/iso-codes'...
$ git fetch origin fd2916e545f5f3e0a5670bc482c5b3d662e8450d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/forks/pnemade/rpms/iso-codes
 * [new ref]         fd2916e545f5f3e0a5670bc482c5b3d662e8450d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at fd2916e Add tmt testcase for CI