$ git clone -n https://src.fedoraproject.org/rpms/fcitx5-m17n.git /var/lib/mock/f41-build-side-1-2635215-26101/root/chroot_tmpdir/scmroot/fcitx5-m17n
Cloning into '/var/lib/mock/f41-build-side-1-2635215-26101/root/chroot_tmpdir/scmroot/fcitx5-m17n'...
$ git fetch origin e6af2e3e19d1c1914e599791acc36a58b55fb023:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/fcitx5-m17n
 * [new ref]         e6af2e3e19d1c1914e599791acc36a58b55fb023 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e6af2e3 convert license to SPDX