$ git clone -n https://src.fedoraproject.org/rpms/powdertoy.git /var/lib/mock/f38-build-side-42-init-devel-991250-29118/root/chroot_tmpdir/scmroot/powdertoy
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-991250-29118/root/chroot_tmpdir/scmroot/powdertoy'...
$ git fetch origin f27a5baf0647700c414652c1d4ffb8cefff8e88c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/powdertoy
 * [new ref]         f27a5baf0647700c414652c1d4ffb8cefff8e88c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f27a5ba Add a patch to fix build failures with GCC13