$ git clone -n https://src.fedoraproject.org/rpms/criu.git /var/lib/mock/f40-build-1931650-25122/root/chroot_tmpdir/scmroot/criu
Cloning into '/var/lib/mock/f40-build-1931650-25122/root/chroot_tmpdir/scmroot/criu'...
$ git fetch origin 6b6494641d59167c177ac6e82e457a862b8dd6e3:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/criu
 * [new ref]         6b6494641d59167c177ac6e82e457a862b8dd6e3 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6b64946 Apply plugins-amdgpu-fix-printf-format-specifiers patch