$ git clone -n https://src.fedoraproject.org/rpms/fcitx5-zhuyin.git /var/lib/mock/f40-build-1931883-25123/root/chroot_tmpdir/scmroot/fcitx5-zhuyin
Cloning into '/var/lib/mock/f40-build-1931883-25123/root/chroot_tmpdir/scmroot/fcitx5-zhuyin'...
$ git fetch origin 76a1ee116cc8d459e30279b11612303de6e3207c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/fcitx5-zhuyin
 * [new ref]         76a1ee116cc8d459e30279b11612303de6e3207c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 76a1ee1 update to upstream release 5.1.1