$ git clone -n https://src.fedoraproject.org/rpms/libpinyin.git /var/lib/mock/f41-build-832220-14881/root/chroot_tmpdir/scmroot/libpinyin
Cloning into '/var/lib/mock/f41-build-832220-14881/root/chroot_tmpdir/scmroot/libpinyin'...
$ git fetch origin 99e3228d2102840a3a8ef835c1b538185ce326e6:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libpinyin
 * [new ref]         99e3228d2102840a3a8ef835c1b538185ce326e6 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 99e3228 Eliminate use of obsolete %patchN syntax (#2283636)