$ git clone -n https://src.fedoraproject.org/rpms/xwxapt.git /var/lib/mock/f45-build-39172-732/root/chroot_tmpdir/scmroot/xwxapt
Cloning into '/var/lib/mock/f45-build-39172-732/root/chroot_tmpdir/scmroot/xwxapt'...
$ git fetch origin feae972216ad67688e3bccc24f84e1aedb8ddd62:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/xwxapt
 * [new ref]         feae972216ad67688e3bccc24f84e1aedb8ddd62 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at feae972 Add patch.