$ git clone -n https://src.fedoraproject.org/rpms/fcitx-unikey.git /var/lib/mock/f42-build-886014-187089/root/chroot_tmpdir/scmroot/fcitx-unikey
Cloning into '/var/lib/mock/f42-build-886014-187089/root/chroot_tmpdir/scmroot/fcitx-unikey'...
$ git fetch origin a907cad18ef62031a4344c3cf3d1da3e4ce2defa:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/fcitx-unikey
 * [new ref]         a907cad18ef62031a4344c3cf3d1da3e4ce2defa -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a907cad Rebuilt for https://fedoraproject.org/wiki/Fedora_42_Mass_Rebuild