$ git clone -n https://src.fedoraproject.org/rpms/scim-pinyin.git /var/lib/mock/f45-build-35631-698/root/chroot_tmpdir/scmroot/scim-pinyin
Cloning into '/var/lib/mock/f45-build-35631-698/root/chroot_tmpdir/scmroot/scim-pinyin'...
$ git fetch origin aa49a16e32806a5635ce6b3df9505c770846c180:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/scim-pinyin
 * [new ref]         aa49a16e32806a5635ce6b3df9505c770846c180 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at aa49a16 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild